Question

The conductor is connected to a 12V voltage, with a current of 500mA flowing through the conductor. During what time will the electricity work be 100J?


F = force
l = length
P = power
t = time

U = potential energy
R = resistance
E = energy​

Answer 1

Answer:

The time needed for energy to reach 100J is 16.7s

Explanation:

Using the formula, P=V×I and P=Q/t where I is current and Q is energy :

500mA = 0.5A

P = 0.5 × 12

= 6W

6 = 100/t

t = 100/6

= 16.7s