Question

7. An electric heater of resistance 80 draws 15A current for 2 hours. Calculate the
heat developed in the resistor.
devices?​

Answer 1

Explanation:

$Given parameters</p><p>The resistance of the electric heater (R) = 8 Ω</p><p>Current drawn (I) = 15 A</p><p>Time = 2 hrs</p><p>T = 120 min x 60</p><p>Time (T) = 7200 secs</p><p>The rate of heat produced by the device in terms of power is expressed as</p><p>P= I2R</p><p>P = 15 x 15 x 8</p><p>P = 1800 watt$

Answer 2

Answer:

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Explanation:

Given parameters

The resistance of the electric heater (R) = 8 Ω

Current drawn (I) = 15 A

Time = 2 hrs

T = 120 min x 60

Time (T) = 7200 secs

The rate of heat produced by the device in terms of power is expressed as

P= I2R

P = 15 x 15 x 8

P = 1800 watt

Answer :-

P= 1800 watt