Q6 of 12 Page 37

A potential difference of 200 V is applied at a 200 Ω resistor for 5 minutes.

Calculate the amount of heat generated.

Given:

Voltage = 200V


Resistance = 200Ω


Heat generated = ?


Now, formula used:


Heat generated = Power × time


Power,


⇒ Power =


Heat generated in 5 minutes i.e. 5× 60 s i.e. 300 s


⇒ Heat = Power× time


= 200× 300 = 60000 J


= 60 kJ


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