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Current Electricity QUESTIONS AND ANSWERS

IIT JEE : Current Electricity QUESTIONS AND ANSWERS :: part2 : 26 to 30

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

26.The potential gradient along the length of a uniform wire is 5 V per metre. There at two points A and B on the wire which are 20 cm and 80 cm on the metre scale fitted along the wire. The p. d. between them will be

2 V

3 V

4 V

1 V

27.A circuit whose resistance is R is connected to n similar cells. If the current in the circuit is the same whether the cells are connected in series or in parallel, then the internal resistance r of each cell is given by

r = (R / n)

r = nR

r = R

r = (1 / R)

28.An ammeter of resistance 0.16 ohm shunted with a resistance of 0.04 ohm gives a reading of 8 A. The current in the main circuit is

40 A

20 A

16 A

24 A

More Current Electricity QUESTIONS AND ANSWERS available in next pages