MEDIUM
Earn 100

Explain a simple circuit with a circuit diagram.

Important Questions on Electricity

EASY
Define potential difference.
EASY
Write the circuit symbol of p-n-p transistor.
MEDIUM
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
How much work is done in moving a charge of 5 C across two points having a potential difference 15 V?
MEDIUM
Several lamps of 50 W and 100 Vrating 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

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

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

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EASY

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

EASY
How much work is done in moving a charge of 3 C across two points having a potential difference 15 V?
EASY

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
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Four bulbs B1B2B3 and B4 of 100 W each are connected to 220 V main as shown in the figure. The reading in an ideal ammeter will be
EASY
How much energy is given to each coulomb of charge passing through a 6 V battery?
EASY
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

Electric current is flowing from _____.

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EASY
What will happen if the connecting wire of a circuit breaks down, while a device is working?
EASY
What is an open circuit?
EASY
What is the direction of electric current to flow in an electric circuit?
EASY
No appliances work when the circuit is _____(open/closed).
EASY
What is an electric circuit? What are its various parts?
MEDIUM

Write the odd-one out giving reason.

Open electrical circuit, Circuit diagram, Battery, Closed electric circuit, Switch