IIT JEE Questions And Answers :: Current Electricity: part1



IIT JEE : Current Electricity QUESTIONS AND ANSWERS :: part1 : 11 to 15

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

11.To convert a galvanometer into voltmeter, one should connect:

a low resistance in series with it
a high resistance in series with it
a low resistance in parallel with it
a high resistance in parallel with it

12.The resistance of the series combination of two resistances is S. When they are joined in parallel, the total resistance is P. If S = nP, then the minimum possible value of n is:

4
3
2
1

13.The sensitivity of a potentiometer can be increased by:

decreasing the length of potentiometer wire
increasing the length of potentiometer wire
increasing the emf of the cell used in primary circuit
all the above methods

14.For accurate measurements, the resistance of a voltmeter should be:

as large as possible
equal to the resistance across which the potential difference is to be measured
as small as possible
infinity

15.A big dry cell A and a small dry cell B have the same emf. The internal resistance of A:

is greater than that of B
is equal to that of B
is less than that of B
may have any value independent of its size

More Current Electricity QUESTIONS AND ANSWERS available in next pages

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