What amount of heat will be released in a conductor with a resistance of 1 Ohm for 30 seconds at a current of 4 A?
| February 19, 2021 | education
In order to determine how much heat Q is released in a conductor with resistance R, through which an electric current flows during time t, with a force I, the Joule-Lenz law is used:
Q = (I ^ 2) ∙ R ∙ t.
From the condition of the problem it is known that in a conductor with a resistance R = 1 Ohm during t = 30 s a current with a force of I = 4 A passed. Substitute the values of physical quantities into the calculation formula:
Q = (4 A) ^ 2 ∙ 1 Ohm ∙ 30 s;
Q = 480 J.
Answer: the amount of heat released in the conductor is 480 J.
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