Question

* A voltage of 20 v is requesed to cause a Current of 2 A to flow in a resistor of . resistance of 10ohms. what voltage would be required to make the voltage same Current flow, if the resistance where 40ohms​

Answer 1

Answer:

V=IR

V= 2× 40

V= 80 Volts

Explanation:

Thus Current flow of 2A through resistance of 40 ohms require 80 volts

Answer 2

Answer:

80 V

Explanation:

Case I

Voltage, V = 20 V

Current, I = 2 A

Resistance, R = 10 ohm

Case II

We need to find the resistance, when current is same, ie, 2 A and resistance is 40 ohm.

We know, by ohm's law,

V = IR

V = 2 x 40

V = 80 V

Thus, a voltage of 80 V is required to make the current same when the resistance is 40 ohm.

Hope it helps..!