MEDIUM

Earn 100

Explain a simple circuit with a circuit diagram.

Important Questions on Electricity

EASY

Science>Physics>Electricity>Electric Circuits

Define potential difference.

EASY

Science>Physics>Electricity>Electric Circuits

Write the circuit symbol of p-n-p transistor.

MEDIUM

Science>Physics>Electricity>Electric Circuits

What is the meaning of the statement “The potential difference between two points is

1 V

” ? Name the device used to measure potential difference. What is resistance of a conductor? What is electric power? Write three formulae used to find electric power.

EASY

Science>Physics>Electricity>Electric Circuits

How much work is done in moving a charge of

5 C

across two points having a potential difference

15 V ?

MEDIUM

Science>Physics>Electricity>Electric Circuits

Several lamps of

50 W

and

100 V

rating are available. How many of them can be connected in parallel across a battery of a

120 V

of internal resistance

10 Ω

, so that all bulbs glow in full power?

EASY

Science>Physics>Electricity>Electric Circuits

$15$ cells each of emf $2$ volt are connected in series but $2$ of them are connected wrongly. Calculate the emf of the combination.

EASY

Science>Physics>Electricity>Electric Circuits

In the given circuit diagram, identify the objects marked as $1, 2, 3$ .

Question Image

EASY

Science>Physics>Electricity>Electric Circuits

How much work is done in moving a charge of $2 C$ across two points having a potential difference $10 V$ ?

EASY

Science>Physics>Electricity>Electric Circuits

How much work is done in moving a charge of

3 C

across two points having a potential difference

15 V

EASY

Science>Physics>Electricity>Electric Circuits

How can a continuous flow of current be obtained? What are the sources of energy and name of the devices required for continuous flow of current?

EASY

Science>Physics>Electricity>Electric Circuits

Four bulbs

B_{1}

B_{2}

B_{3}

and

B_{4}

100 W

each are connected to

220 V

main as shown in the figure. The reading in an ideal ammeter will be

EASY

Science>Physics>Electricity>Electric Circuits

How much energy is given to each coulomb of charge passing through a

6 V

battery?

EASY

Science>Physics>Electricity>Electric Circuits

In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of the electric mains is 220 V. The minimum capacity of the main fuse of the building will be:

EASY

Science>Physics>Electricity>Electric Circuits

How is an electric bulb connected to a cell?

EASY

Science>Physics>Electricity>Electric Circuits

What will happen if the connecting wire of a circuit breaks down, while a device is working?

EASY

Science>Physics>Electricity>Electric Circuits

What is an open circuit?

EASY

Science>Physics>Electricity>Electric Circuits

What is the direction of electric current to flow in an electric circuit?