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Standard X

Physics

Heating Effect of Current

A resistance ...

Question

A resistance of $25 Ω$ is connected to a 12 V battery. Calcuate the heat energy in joules generated per minute.

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Solution

Current = V / R

= 12 / 25 = 0.48 Ampere

Heat energy = $I^{2} R t$

= $(0.48)^{2} \times 25 \times 60$

= 345.6 Joules

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A resistance of 25Ω is connected to a 12 V battery. Calcuate the heat energy in joules generated per minute.

Current = V / R = 12 / 25 = 0.48 Ampere Heat energy = I2Rt = (0.48)2×25×60 = 345.6 Joules

A resistance of $25 Ω$ is connected to a 12 V battery. Calcuate the heat energy in joules generated per minute.

Current = V / R

= 12 / 25 = 0.48 Ampere

Heat energy = $I^{2} R t$

= $(0.48)^{2} \times 25 \times 60$

= 345.6 Joules