When there is a break in the path of current, the circuit is called:

Answer: open circuit

In series circuit, each device is connected in such a manner that there is only one path for current to flow.

Answer: True

Series circuit has only one path for electrons to flow.

Answer: True

Formula for Total Series Resistance is ___.

Answer: Rt = R1 + R2 + R3

Batteries are generally connected in:

Answer: series

In series circuit if one bulb goes off, other bulbs will:

Answer: also turn off

Addition of resistors in series circuit increases net resistance.

Answer: True

Addition of resistors in parallel circuit increases net resistance.

Answer: False

Addition of resistors in parallel circuit decreases net resistance because:

Answer: more paths available for flow of current

In a parallel circuit, there are two or more paths for current to flow.

Answer: True

It is preferable to connect bulbs in:

Answer: parallel

In ______ connection total resistance is smaller than the smallest resistance.

Answer: parallel

Total resistance in parallel circuit is:

Answer: 1/Rt = 1/R1 + 1/R2 + 1/R3 +…

In a parallel circuit the branch with lowest resistance has the maximum current flowing.

Answer: True

Voltage in each path of parallel circuit is always the same.

Answer: True

Addition of resistors in a parallel circuit decreases net resistance.

Answer: True

In _____ Circuit, current is same in all parts.

Answer: series

In ______ connection total resistance is larger than the largest resistance.

Answer:  series

Copper and aluminium wires are usually employed for electricity transmission because:

Answer:  they have low resistance and they are strong

Devices which deliver electricity are called:

Answer: source

Devices which consume electricity are called:

Answer: load

Solar cell converts:

Answer: solar energy to electrical energy

Combination of solar cells forms:

Answer: solar panel

Combination of solar panels forms:

Answer: solar array

Solar cells are used by satellites in space for generation of electricity.

Answer: True

Tungsten is used for making filament of an electric lamp because of:

Answer: high melting point and high resistance

Filament of an electric bulb is made of:

Answer: tungsten

Electric current is flow of ____

Answer: electrons

All wires in an electric circuit should be covered with:

Answer: insulators

Bodies which allow current to pass through them are:

Answer: conductors

The main component of an electric circuit is:

Answer: electric cell

When circuit is closed electric current does not flow.

Answer: False

Human body is _____ of electricity.

Answer: conductor

Electric fuse is used to protect household electric appliances from accidental:

Answer:  Large flow of current

Unit of electrical resistance:

Answer: Ohm

Device use to make or break circuit:

Answer: Switch

Path along which electric current flows is called ______

Answer: circuit

Current does not flow in ____ circuit.

Answer: open

In a cell, electrons flow from ___ terminal to ___ terminal.

Answer: negative to positive

Electric cell produces electricity from _____ stored in it.

Answer: chemicals stored in it

A combination of two or more cells is called:

Answer: battery

In a dry cell:

Answer: chemical energy changes to electric energy

Primary cells are used in:

Answer: torches

Secondary cells are used in:

Answer: mobile phones

Dry cell can be reused.

Answer: False

Secondary cell are rechargable.

Answer: True

If two identical bulbs are connected in a series circuit and in a parallel circuit, in which circuit will bulbs be brighter?

Answer: parallel

In a parallel circuit, net resistance _____ as more resistors are added to the circuit.

Answer: decreases

A protective device for breaking an electric circuit is:

Answer: fuse

The current in a series circuit containing two bulbs is:

Answer: same at every place in the circuit

Wires are usually made from copper because:

Answer: copper is a very good conductor of electricity

Two bulbs are connected in a series circuit. If the voltage is increased:

Answer: bulbs get brighter and current increases

Three electric cells of 1.5 volt potential difference each are connected as battery. The voltage of the battery will be:

Answer: 4.5 volt