Ohm’s Law, Series and Parallel Circuits – Question Bank
FACTORS AFFECTING RESISTANCE OF A CONDUCTOR
R = ρ l /A
where; ‘ρ’ is resistivity, ‘l ’ is length and ‘A’ is cross sectional area of the conductor
R is directly proportional to length of the conductor; as length increases resistance of the conductor increases because electrons have to travel a longer distance in the conductor;
R is inversely proportional to cross section area of the conductor; as area increases resistance of the conductor decreases because electrons have a large area through which to flow through the conductor;
R is directly proportional to resistivity of the conductor; as resistivity increases resistance of the conductor increases because the material’s intrinsic resistance to flow of electrons is higher.
OHM’S LAW
V = I R ; where ‘V’ is the voltage across the conductor, ‘I’ is the current and ‘R’ the resistance of the conductor
In a simple circuit consisting of 9 volts battery, resistor, ammeter and voltmeter –
Drag and drop the correct resistor to get 9 A current in the circuit. Answer:1 ohm
Drag and drop the correct resistor to get 4.5 A current in the circuit. Answer: 2 ohm
Drag and drop the correct resistor to get 3 A current in the circuit. Answer: 3ohm
Drag and drop the correct resistor to get 1.8 A current in the circuit. Answer: 5ohm
In a simple circuit consisting of 6 volts battery, resistor, ammeter and voltmeter –
Drag and drop the correct resistor to get 6 A current in the circuit. Answer: 1 ohm
Drag and drop the correct resistor to get 3 A current in the circuit. Answer: 2 ohm
Drag and drop the correct resistor to get 2 A current in the circuit. Answer: 3 ohm
Drag and drop the correct resistor to get 1.2 A current in the circuit. Answer: 5 ohm
In a simple circuit consisting of 3 volts battery, resistor, ammeter and voltmeter –
Drag and drop the correct resistor to get 1.5 A current in the circuit. Answer: 2 ohm
Drag and drop the correct resistor to get 1 A current in the circuit. Answer: 3 ohm
Drag and drop the correct resistor to get 3 A current in the circuit, Answer: 1 ohm
Drag and drop the correct resistor to get 0.6 A current in the circuit. Answer: 5 ohm
In a simple circuit consisting of 1.5 volts battery, resistor, ammeter and voltmeter –
Drag and drop the correct resistor to get 1.5 A current in the circuit. Answer: 1 ohm
Drag and drop the correct resistor to get 0.75 A current in the circuit. Answer: 2 ohm
Drag and drop the correct resistor to get 0.5 A current in the circuit. Answer: 3 ohm
Drag and drop the correct resistor to get 0.3 A current in the circuit. Answer: 5 ohm
In a simple circuit consisting of a 1 ohm resistor, a battery, ammeter and voltmeter –
Drag in correct battery to get 1.5 A current in the circuit. Answer: 1.5 volts
Drag in correct battery to get 3 A current in the circuit. Answer: 3 volts
Drag in correct battery to get 6 A current in the circuit. Answer: 6 volts
Drag in correct battery to get 9 A current in the circuit. Answer: 9 volts
In a simple circuit consisting of a 2 ohm resistor, a battery, ammeter and voltmeter –
Drag in correct battery to get 0.75 A current in the circuit. Answer: 1.5 volts
Drag in correct battery to get 1.5 A current in the circuit. Answer: 3 volts
Drag in correct battery to get 3 A current in the circuit. Answer: 6 volts
Drag in correct battery to get 4.5 A current in the circuit. Answer: 9 volts
In a simple circuit consisting of a 3 ohm resistor, a battery, ammeter and voltmeter –
Drag in correct battery to get 0.5 A current in the circuit. Answer: 1.5 volts
Drag in correct battery to get 1 A current in the circuit. Answer: 3 volts
Drag in correct battery to get 2 A current in the circuit. Answer: 6 volts
Drag in correct battery to get 3 A current in the circuit. Answer: 9 volts
In a simple circuit consisting of a 5 ohm resistor, a battery, ammeter and voltmeter –
Drag in correct battery to get 0.3 A current in the circuit. Answer: 1.5 volts
Drag in correct battery to get 0.6 A current in the circuit. Answer: 3 volts
Drag in correct battery to get 1.2 A current in the circuit. Answer: 6 volts
Drag in correct battery to get 1.8 A current in the circuit. Answer: 9 volts
The current in a circuit consisting of 1.5 volts battery and 1 ohm resistor will be?
Answer: 1.5 A
The current in a circuit consisting of 1.5 volts battery and 2 ohm resistor will be?
Answer: 0.75 A
The current in a circuit consisting of 1.5 volts battery and 3 ohm resistor will be?
Answer: 0.5 A
The current in a circuit consisting of 1.5 volts battery and 5 ohm resistor will be?
Answer: 0.3 A
The current in a circuit consisting of 3 volts battery and 1 ohm resistor will be?
Answer: 3 A
The current in a circuit consisting of 3 volts battery and 2 ohm resistor will be?
Answer: 1.5 A
The current in a circuit consisting of 3 volts battery and 3 ohm resistor will be?
Answer: 1 A
The current in a circuit consisting of 3 volts battery and 5 ohm resistor will be?
Answer: 0.6 A
The current in a circuit consisting of 6 volts battery and 1 ohm resistor will be?
Answer: 6 A
The current in a circuit consisting of 6 volts battery and 2 ohm resistor will be?
Answer: 3 A
The current in a circuit consisting of 6 volts battery and 3 ohm resistor will be?
Answer: 2 A
The current in a circuit consisting of 6 volts battery and 5 ohm resistor will be?
Answer: 1.2 A
The current in a circuit consisting of 9 volts battery and 1 ohm resistor will be?
Answer: 9 A
The current in a circuit consisting of 9 volts battery and 2 ohm resistor will be?
Answer: 4.5 A
The current in a circuit consisting of 9 volts battery and 3 ohm resistor will be?
Answer: 3 A
The current in a circuit consisting of 9 volts battery and 5 ohm resistor will be?
Answer: 1.8 A
SERIES CIRCUITS
In a series circuit there is only one path for the current and current is the same in all the resistors. The net voltage gets divided among the individual resistors. The Equivalent resistance of series of resistors is given by R = R1+R2+R3+…
You are given a pair of 1 ohm, 2 ohm, 3 ohm and 5 ohm resistors.
Complete the series circuit consisting of 1.5 volts battery by adding two resistors so as to get current of 0.5 A in the circuit?
Answer: 1 ohm and 2 ohm
Complete the series circuit consisting of 1.5 volts battery by adding two resistors so as to get current of 0.75 A in the circuit?
Answer: 1 ohm and 1 ohm
Complete the series circuit consisting of 3 volts battery by adding two resistors so as to get current of 0.3 A in the circuit?
Answer: 5 ohm and 5 ohm
Complete the series circuit consisting of 3 volts battery by adding two resistors so as to get current of 0.5 A in the circuit?
Answer: 3 ohm and 3 ohm or 1 ohm and 5 ohm
Complete the series circuit consisting of 3 volts battery by adding two resistors so as to get current of 1 A in the circuit?
Answer: 1 ohm and 2 ohm
Complete the series circuit consisting of 3 volts battery by adding two resistors so as to get current of 1.5 A in the circuit?
Answer: 1 ohm and 1 ohm
Complete the series circuit consisting of 6 volts battery by adding two resistors so as to get current of 0.6 A in the circuit?
Answer: 5 ohm and 5 ohm
Complete the series circuit consisting of 6 volts battery by adding two resistors so as to get current of 1 A in the circuit?
Answer: 3 ohm and 3 ohm or 1 ohm and 5 ohm
Complete the series circuit consisting of 6 volts battery by adding two resistors so as to get current of 1.5 A in the circuit?
Answer: 2 ohm and 2 ohm or 1 ohm and 3 ohm
Complete the series circuit consisting of 6 volts battery by adding two resistors so as to get current of 2 A in the circuit?
Answer: 1 ohm and 2 ohm
Complete the series circuit consisting of 6 volts battery by adding two resistors so as to get current of 3 A in the circuit?
Answer: 1 ohm and 1 ohm
Complete the series circuit consisting of 9 volts battery by adding two resistors so as to get current of 0.9 A in the circuit?
Answer: 5 ohm and 5 ohm
Complete the series circuit consisting of 9 volts battery by adding two resistors so as to get current of 3 A in the circuit?
Answer: 1 ohm and 2 ohm
Complete the series circuit consisting of 9 volts battery by adding two resistors so as to get current of 4.5 A in the circuit?
Answer: 1 ohm and 1 ohm
The current in a series circuit consisting of 1.5 volts battery and two 5 ohm resistors will be?
Answer: 0.15 A
The current in a series circuit consisting of 1.5 volts battery and two 3 ohm resistors will be?
Answer: 0.25 A
The current in a series circuit consisting of 1.5 volts battery and a 1 ohm and a 5 ohm resistor will be?
Answer: 0.25 A
The current in a series circuit consisting of 1.5 volts battery and a 2 ohm and a 3 ohm resistor will be?
Answer: 0.3 A
The current in a series circuit consisting of 3 volts battery and two 2 ohm resistors will be?
Answer: 0.75 A
The current in a series circuit consisting of 3 volts battery and a 2 ohm and a 3 ohm resistor will be?
Answer: 0.6 A
The current in a series circuit consisting of 3 volts battery and a 1 ohm and a 3 ohm resistor will be?
Answer: 0.75 A
The current in a series circuit consisting of 6 volts battery and a 1 ohm and a 3 ohm resistor will be?
Answer: 1.5 A
The current in a series circuit consisting of 6 volts battery and a 2 ohm and a 3 ohm resistor will be?
Answer: 1.2 A
The current in a series circuit consisting of 6 volts battery and a 5 ohm and a 3 ohm resistor will be?
Answer: 0.75 A
The current in a series circuit consisting of 9 volts battery and two 3 ohm resistors will be?
Answer: 1.5 A
The current in a series circuit consisting of 9 volts battery and a 2 ohm and a 3 ohm resistor will be?
Answer: 1.8 A
The current in a series circuit consisting of 9 volts battery and a 1 ohm and a 5 ohm resistor will be?
Answer: 1.5 A
PARALLEL CIRCUITS
In a parallel circuit there multiple paths for the current and current gets divided among the individual resistors. The net voltage is the same across the individual resistors. The Equivalent resistance of series of resistors is given by 1/R = 1/R1+1/R2+1/R3+…
You are given a pair of 1 ohm, 2 ohm, 3 ohm and 5 ohm resistors.
Complete the parallel circuit consisting of 1.5 volts battery by adding two resistors so as to get current of 1 A in the circuit?
Answer: 3 ohm and 3 ohm
Complete the parallel circuit consisting of 1.5 volts battery by adding two resistors so as to get current of 1.5 A in the circuit?
Answer: 2 ohm and 2 ohm
Complete the parallel circuit consisting of 1.5 volts battery by adding two resistors so as to get current of 3 A in the circuit?
Answer: 1 ohm and 1 ohm
Complete the parallel circuit consisting of 3 volts battery by adding two resistors so as to get current of 6 A in the circuit?
Answer: 1 ohm and 1 ohm
Complete the parallel circuit consisting of 3 volts battery by adding two resistors so as to get current of 3 A in the circuit?
Answer: 2 ohm and 2 ohm
Complete the parallel circuit consisting of 3 volts battery by adding two resistors so as to get current of 2 A in the circuit?
Answer: 3 ohm and 3 ohm
Complete the parallel circuit consisting of 6 volts battery by adding two resistors so as to get current of 12 A in the circuit?
Answer: 1 ohm and 1 ohm
Complete the parallel circuit consisting of 6 volts battery by adding two resistors so as to get current of 6 A in the circuit?
Answer: 2 ohm and 2 ohm
Complete the parallel circuit consisting of 6 volts battery by adding two resistors so as to get current of 4 A in the circuit?
Answer: 3 ohm and 3 ohm
Complete the parallel circuit consisting of 9 volts battery by adding two resistors so as to get current of 18 A in the circuit?
Answer: 1 ohm and 1 ohm
Complete the parallel circuit consisting of 9 volts battery by adding two resistors so as to get current of 9 A in the circuit?
Answer: 2 ohm and 2 ohm
Complete the parallel circuit consisting of 9 volts battery by adding two resistors so as to get current of 6 A in the circuit?
Answer: 3 ohm and 3 ohm
The current in a parallel circuit consisting of 1.5 volts battery and two 5 ohm resistors will be?
Answer: 0.6 A
The current in a parallel circuit consisting of 1.5 volts battery and a 2 ohm and a 3 ohm resistor will be?
Answer: 1.25 A
The current in a parallel circuit consisting of 1.5 volts battery and a 1 ohm and a 3 ohm resistor will be?
Answer: 2 A
The current in a parallel circuit consisting of 3 volts battery and two 5 ohm resistors will be?
Answer: 1.2 A
The current in a parallel circuit consisting of 3 volts battery and a 2 ohm and a 3 ohm resistor will be?
Answer: 2.5 A
The current in a parallel circuit consisting of 3 volts battery and a 1 ohm and a 3 ohm resistor will be?
Answer: 4 A
The current in a parallel circuit consisting of 6 volts battery and two 5 ohm resistors will be?
Answer: 2.4 A
The current in a parallel circuit consisting of 6 volts battery and a 2 ohm and a 3 ohm resistor will be?
Answer: 5 A
The current in a parallel circuit consisting of 6 volts battery and a 1 ohm and a 3 ohm resistor will be?
Answer: 8 A
The current in a parallel circuit consisting of 9 volts battery and two 5 ohm resistors will be?
Answer: 3.6 A
The current in a parallel circuit consisting of 9 volts battery and a 2 ohm and a 3 ohm resistor will be?
Answer: 7.5 A
The current in a parallel circuit consisting of 9 volts battery and a 1 ohm and a 3 ohm resistor will be?
Answer: 12 A