Question

An electric heater of resistance 5 ohm is connected to the electric source.If a current of 6 ampere flows through the heater. What will be the heat produced in 5 minutes

Answer 1

Answer:

Heat energy = H= I^2Rt

= (15)^2×500×30×60. •1min=60sec

H=202500000J

H=202.5MJ. •1MJ=10^6J

3.9

Answer 2

Heat produced =5400 J

Given:

An electric heater of resistance 5 ohm.

Current of 6 ampere flows through the heater.

Time = 5 minutes.

To find:

The heat produced.

Formula used:

H = I²Rt

Where H = Heat produced.

           I = Current.

          R = resistance.

          t = Time.

Explanation:

Given that I = 6 amp.    R = 5 ohm.     t= time=5 minute= 5×60 = 300 sec.

 Heat produced = I²Rt

 Heat produced = 6²×5×30

 Heat produced = 36 × 150

 Heat produced =5400 J

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