The current C flowing in an electrical circuit at a constant

The current, C, flowing in an electrical circuit at a constant potential varies inversely as the resistance, R, of the circuit. If the current is 25 amperes when the resistance is 4 ohms, what is the current when the resistance is 5 ohms? (Solve by setting up a variation equation.)

Solution

Dear Student

Thank you for using Chegg !!

Given that Current is inversely proportional to resistance

=> I = k/R

Case 1:-

I1 = k/ R1

Case 2:-

I2 = k/R2

Now dividing uation of case 1 and 2 we get

I1/I2 = R2/R1

25/I2 = 5/4

Gives I2 = 20A

When resistance is 5 ohms then current is 20A

Hence solved