Description

Question

The current (i) in an electrical conductor varies inversely as the resistance (r) of theconductor. The current is 2 amperes when the resistance is 960 ohms. What is the current when the resistance is 480 ohms?

Answer 1

V=IR = voltage = current times resistance

V/R = I volts divided by amperes = ohms

V/2 = 960

V/R = 480

With V constant, R=4 amperes

V= 2(960) = 4(480) = 1920 volts