railway RRB Technician Grade 1 Mock Test 2024 Physics Work Power and Energy Power

An electric water boiler is rated 2000 watt. If electric power costs 5 rupees per kilo-watt-hour, then the cost of power for 8 hours running of the boiler is

1

70 rupees

2

90 rupees

3

60 rupees

4

80 rupees

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