What amount of heat is released in a conductor in 10 minutes if 3 A flows through it, and the resistance is 20 Ohm?
| May 30, 2021 | education
According to the Joule-Lenz law, the amount of heat that is released on the conductor can be calculated using the formula:
Q = I2 * R * t, where Q is the released amount of heat (J), I is the current strength (I = 3 A), R is the resistance of the conductor (R = 20 Ohm), t is the time the current passes through the conductor (t = 10 minutes = 10 * 60 s = 600 s).
Let’s calculate the released amount of heat in the conductor:
Q = I2 * R * t = 32 * 20 * 600 = 108000 J = 108 kJ.
Answer: For 10 minutes, 108 kJ of heat will be released on the conductor.
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