Problema Solution
For a fixed voltage, the current I flowing in a wire varies inversely as the resistance R of the wire. If the current is 8 amperes when the resistance is 15 ohms, what will the resistance be when the current is 5 amperes?
Answer provided by our tutors
I1 = 8 amperes
R1 = 15 ohms
I2 = 5 amperes
R2 = ?
I1*R1 = I2*R2
8*15 = 5*R2
R2 = (8*15)/5
R2 = 24 ohms
the resistance will be 24 ohms.