How can you use the familiar ohm, you can express the amount of heat released by a conductor

univerkov | August 18, 2021 | education

How can you use the familiar ohm, you can express the amount of heat released by a conductor with a current in terms of the current strength, the resistance of the conductor and time?

According to the Joule-Lenz law, the amount of heat Q in a conductor is determined by the formula: Q = I * U * t.
Where I is the current in the conductor, U is the voltage at the ends of the conductor, t is the time during which the current flows in the conductor.
According to Ohm’s law: the current I is directly proportional to the voltage U and inversely proportional to the resistance of the conductor R.
I = U / R.
U = I * R.
The Joule-Lenz law will have the form: Q = I * I * R * t = I ^ 2 * U * t.
Answer: Q = I ^ 2 * R * t.

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