Question

An electric bulb rated 100 watt 230 volt is connected to source of 230 volt AC mains the bulb is lighted for 100 days at the rate of light consumed by the bulb if 1 unit of electricity costs 50 paise.​

Answer 1

Answer:

p = 100 w = 0.1 kw

t = 100 × 24 = 2400 hour

energy consumption = p× t

= 2400 × 0.1

= 240 kWh

now, cost of 1 kWh = 50 paise = 0.5 ₹

so, total cost = 240 × 0.5

=120₹

Answer 2

Answer:

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