An electric heater is left on for 30 minutes. During this time it uses – McqOptions

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1.	An electric heater is left on for 30 minutes. During this time it uses 1200 W of electric energy. The total cost of the electricity will be if electricity costs 7 paisa per kWhr
A.	252 paisa
B.	25200 paisa
C.	4200 paisa
D.	4.2 paisa
Answer» E.

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