On a bulb, 200 V - 100 W is printed. What would be the resistance of the bulb? If 5 of these
bulbs burn for 4 hours, what would be the amount of electricity consumed and the cost of
electricity, if the rate is 50 paise per unit?
bulbs burn for 4 hours, what would be the amount of electricity consumed and the cost of
electricity, if the rate is 50 paise per unit?
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we get R =
=
= 400
Energy consumed = P x t
= 100 x 4
= 400 Wh
= 0.4 kWh
Cost at the rate of 50 paise per unit
= Rs (0.50 x 0.4)
= Rs 2