The voltage across the resistor is 20 V, and the current in the resistor is 0.5 A. How long does it take for the electric current to work 1 kJ?

univerkov | December 3, 2020 | education

Given:
I = 0.5 A
U = 20V
A = 1 kJ
Find: t-?
Decision:
Find the time by the formula
A = UIt
t = A / UI
1 kJ = 1000 J
t = 1000/20 * 0.5
t = 100 s
Answer: in 100 seconds

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