The number of division in ammeter of range 2A is 10 and voltmeter of range 5 V is 20 - Physics - Electricity

Question

The number of division in ammeter of range 2A is 10 and
voltmeter of range 5 V is 20 When the switch of the circuit given
below is closed, ammeter reading is at 8th division and voltmeter
reading is at 8th divisions The value of resistance of resistor
is
(a) 1 25 V (b) 2 V (c) 0 75 V (d) 1 5 V

Neha Gupta · Accepted Answer

10 divisions of ammeter = 2 A1 division of ammeter = 2/10 = 0
2 A20 divisions of voltmeter = 5 V1 division of voltmeter = 5/20 = 0
25 VWhen ammeter reads 8 divisions, current I = 8×0
2 = 1
6 Awhen voltmetr reads 8 divisions, voltage V = 8×0
25 = 2 VResistance R = VIR = 21
6 = 1 25 Ω

The number of division in ammeter of range 2A is 10 and voltmeter of range 5 V is 20. When the switch of the circuit given below is closed, ammeter reading is at 8th division and voltmeter reading is at 8th divisions. The value of resistance of resistor is (a) 1.25 V (b) 2 V (c) 0.75 V (d) 1.5 V

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

(a) 1.25 V (b) 2 V (c) 0.75 V (d) 1.5 V