Question

3. An electric heater is rated 1500 W. Then the work done by it in an hour is a) 150 J b) 15000 J c) 54 x 10⁵J d) 54 x 10⁶J​

Answer 1

Answer:

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Explanation:

join to get the answer

Answer 2

Answer:

54 x 10^5 J (c)

Explanation:

Energy = Power x Time

= 1500W x 1 hr

= 1500 W

= 1.5 kWh

E = 1.5kWh

E = 1.5 x3.6 x 10^6 (1 kWh = 3.6 x 10^6 J)

E = 5.4 x 10^6 J

E = 54 x 10^5 J