Hi,
The current (I) varies directly as the voltage (V) in an electric circuit.
If the current is 4 amperes when the voltage is 100 volts,
find the current when the voltage is 75 volts.
I=kV
4 = k(100)
.04 = k
I = .04(75V) = 3 amperes (Notice when voltage is less, current is less)
Wish You the Best in your Studies.