Question

A current of 200 mA through a conductor converts 40 joules of electrical energy into heat in 30 second

s determine the p
otential drop across the conductor
​

Answer 1

V = 6.65 [volt]

Step-by-step explanation:

First, we must calculate the power by means of the following equation, where the voltage is related to the energy produced or consumed in a given time.

`P=E/t\\P = 40/30\\P = 1.33[s]`

Using the power we can calculate the voltage, by means of the following equation that relates the voltage to the current.

`P=V*I`

where:

V = voltage [Volts]

I = current = 200 [mA] = 0.2 [A]

`V = 1.33/0.2\\V = 6.65 [volt]`