Q14 of 41 Page 461

The potential difference between the terminals of an electric heater is 60V when it draws a current of 4A from the source. Find the resistance of heater when in use.

According to the question

Potential Difference (V) = 60V


Current drawn (I) = 4A


By Ohm’s Law


V = IR


⇒ 60 = 4 × R


⇒


Hence the resistance is 15Ω.


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