IIT JEE Questions And Answers :: Current Electricity: part1



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:

3
1/3
8/9
2

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
Resistivity is inversely proportional to relaxation time when number of electrons per unit volume of material remains constant
All of the above

More Current Electricity QUESTIONS AND ANSWERS available in next pages

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