Question

a heater opetates at 920W, 230V. calculate the current through the heater​

Answer 1

Answer:

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Explanation:

Given:

Power = 920 W = 920 J/s

(∵ 1 Watt = 1Joule/sec)

Time = 5 mins = 5 × 60 seconds = 300 seconds.

Formula used:

Heat, H = Power × time

⇒ H = 920 J-sec-1 × 300 sec

= 276000 J

= 276 × 103 J

∴ 276 kilo joules energy will be generated in the heater when the current flows for 5 mins

Answer 2

Explanation:

Given:

Power = 920 W = 920 J/s

(∵ 1 Watt = 1Joule/sec)

Time = 5 mins = 5 × 60 seconds = 300 seconds.

Formula used:

Heat, H = Power × time

⇒ H = 920 J-sec-1 × 300 sec

= 276000 J

= 276 × 103 J

∴ 276 kilo joules energy will be generated in the heater when the current flows for 5 mins.

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