EASY
10th CBSE
IMPORTANT
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Calculate the effective resistance (in ohms) between A and B.

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Important Questions on Electricity

MEDIUM
10th CBSE
IMPORTANT

Calculate the effective resistance between A and B. Also find the reading of ammeter and voltmeter.

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MEDIUM
10th CBSE
IMPORTANT
In the given circuit calculate
(i) the total resistance of the circuit
(ii) current flowing through the circuit
(iii) Potential difference across (a) the lamp and (b) resistor.
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MEDIUM
10th CBSE
IMPORTANT

A piece of wire of resistance 20  is drawn out so that its length is increased to twice its original length. Calculate the resistance (in ohms) of the wire in this new situation.

(Choose among the following: 40 /80 /400)

EASY
10th CBSE
IMPORTANT
Study the following electric circuit and find potential difference (in volt) across 4 Ω resistor.
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MEDIUM
10th CBSE
IMPORTANT
State four different ways in which three resistors of 'r' ohm each may be connected in a circuit. In which case is the equivalent resistance of the combination maximum?
MEDIUM
10th CBSE
IMPORTANT
State four different ways in which three resistors of 'r' ohm each may be connected in a circuit. In which case is the equivalent resistance of the combination minimum?
EASY
10th CBSE
IMPORTANT
A lamp rated 100 W at 220 V is connected to the mains electric supply. What current (in ampere) is drawn from the supply line if the voltage is 220 V?
EASY
10th CBSE
IMPORTANT
Calculate the electric energy (in kWh) consumed by a 1200 W toaster in 20 minutes.