1.
What is the charge on a capacitor of 10 μF connected in parallel with a battery of 10 V and also in parallel of resistor 10 Ω?
2.
The specific resistance of a conductor increases with
3.
The charge flows through a resistance 2 Ω in closed circuit varies with time t as q = t – t². The potential different across the resistance at t = 1 s will be
4.
A bulb is rated 100 W, 220 V. When it is connected with a battery of 110 V, the power of the bulb becomes
5.
Identify the wrong statement.
6.
The current in a conductor varies with time as I = 2t + 3 t² where I is in ampere and t is in seconds. Electric charge flowing through the conductor during t =1 s to t = 2 s is
7.
A resistance R is connected in series with an ideal voltmeter. The combination is connected with a battery of 10 V across it. The voltmeter will read
8.
Current through a wire of resistance 10 Ω when connected across a battery of 12 V alongwith a closed switch in parallel of the resistance is
9.
When temperature increases, the drift speed
10.
A voltmeter connected with a resistance R in series and a battery of 10 V also connected in series of it. The circuit is open. The voltmeter will read
11.
A cell of 12 V with neglible internal resistance is connected between two resistances of 2 Ω and 3 Ω. The potential difference across A and B as shown in the figure is
12.
As shown in the circuit, find the current.
13.
Three cells each 1 V, 2 V and 3 V are connected in parallel and the combination is connected with a resistance of 2 ohm across it. Find the current in the circuit.
14.
Two bulbs of 12 W and 4 W are once connected in parallel and then they are connected in series. The ratio of equivalent power of parallel to series will be
15.
When galvanometer and battery are interchanged, the balancing of Wheatstone bridge
16.
An galvanometer gives full-scale deflection when current of 1.0 A is passed in it. To convert it into 5 A range ammeter, the ratio of shunt to galvanometer resistance will be
17.
Two resistors of 100 Ω and 200 Ω are connected in series. This combination is connected with a battery of 24 V. When a voltmeter of 100 Ω resistance is connected across 100 Ω resistor, then the reading of the voltmeter will be
18.
In a Wheatstone Bridge circuit, P = 5 Ω, Q = 10 Ω, R = 10 Ω, S = 5 Ω, G = 15 Ω. When switch is closed, find the current drawn from the battery of potential difference 13 V.
19.
The mobility is the ratio of
20.
When collisions of electrons increases, the drift speed of electrons in a metal conductor
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