Electric Current Quiz 2 – Punjab Meritorious School Preparation Portal

Welcome to your 17th Aug Electric Current Quiz 2 CBT TEST

Fill the Details mentioned below and Attempt the Test.

Name

School Name with City

Phone Number

The SI unit of resistivity is :

The MKS unit of specific resistance is

Determine the potential difference between the points C and D in the given figure.

3.6 V

7.2 V

12V

10.8 V

The masses of three copper wires are in the ratio 5 : 3 : 1 and their lengths are in the ratio 1 : 3 : 5. The ratio of their electrical resistance is :

1 : 3 : 5

5 : 3 : 1

1 : 15 : 125

125 : 15 : 1

A wire of resistance 1 Ω is elongated by 10%. The resistance of the elongated wire is :

1.1 Ω

11.1 Ω

1.21 Ω

13.1 Ω

The current in the given circuit is

8.31 A

6.82 A

4.92 A

2.0 A

For two resistance wires joined in parallel, the resultant resistance is 6/5 Ω. When on of the resistance wire breaks the effective resistance becomes 2 Ω. Find the resistance of the broken wire.

3 Ω

4 Ω

2 Ω

A wire of resistance R is cut into n equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be :

The resistivity of a wire :

varies with its length

varies with its mass

varies with it cross-section

is independent of length, cross-section and mass of the wire.

A wire of length l is drawn such that its diameter is reduced to half of its original diameter. If the initial resistance of the wire 10 Ω, its resistance would be :

40 Ω

60 Ω

120 Ω

160 Ω

Please fill in the comment box below.

Time is Up!

Time's up