CBSE-XII-Phy-Ch-2-Current Electricity-Paper-3 online Test

Zero
20 V
60 V
120 V


B will be zero
A will be zero
A and B will be 2V
A will be > 2V and B will be <2V


3 A
13 V
23 A
-3 A


5(
10(
15(
20(


How much work is required to carry a 6 (C charge from the negative terminal to the positive terminal of a 9 V battery?
54(10–3 j
54(10–6 j
54(10–9 j
54(10–12 j
In order to pass 10 % of main current through a moving coil galvanometer of 99 (, the resistance of the required shunt is:
9.9(
10(
11(
9(


320(
8(
20(
40(
In an experiment to measure the internal resistance of a cell by potentiometer, it is found that the balance point is at a length of 2m when the cell is shunted by a 5( resistance; and is at a length. Of 3 m when the cell is shunted by 10( resistance. The internal resistance of the cell is, then:
1.5(
10(
15(
1(


1.5 V
3.0 V
0.67 V
1.33 V


1(
3(
10(
5(


10/9
0.1
1.0
10.0


3 V
2 V
5 V
4 V


If R1 and R2 are respectively the filament resistance of a 200 W bulb and 100 W bulb designed to operator on the same voltage, then:
R1 is two times R2
R2 is two times R1
R2 is four times R1
R1 is four times R2