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Current Electricity QUESTIONS AND ANSWERS

IIT JEE : Current Electricity QUESTIONS AND ANSWERS :: part1 : 6 to 10

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

6.Which of the following has the maximum resistance?

Voltmeter

Milivoltmeter

Ammeter

Miliammeter

7.An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii of the wires are in the ratio of 4/3 and 2/3, then the ratio of the currents passing through the wire will be:

1/3

8/9

8.The length of a given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter the change in the resistance of the wire will be:

200%

100%

50%

300%

9.A voltmeter can be constructed from a moving coil galvanometer by:

shunting it with a high resistance

shunting it with a low resistance

connecting a high resistance in series with it

connecting a low resistance in series with it

10.Mark correct option or options.

In the absence of an electric field, electrons move in straight lines between collisions

Relaxation time is of order 10-14 second