Question

the number of divisions in voltmeter of range 5 v is 20 and ammeter of range 2 A is 10. When the switch of the circuit given alongside is closed, voltmeter reading is at 8th division and ammeter reading is at 8th division. What is the value of resistance of resistor​

Answer 1

Answer:

10 divisions of ammeter= 2A

1 division = 2A/10 = 0.2 A

20 divisions of voltmeter = 5 v 

1 division = 0.25 V

when ammeter reads 8 divisions I= 8x 0.2 = 1.6A

when volt meter reads 8 divisions V= 8x 0.25 = 2v

R = V/I

R=2/1.6=1.25 ohm

Mark brainliest :P