Question

A bulb is rated at 200 V-100 W. What is its resistance ? Five such bulbs burn for 4
hours. What is the electrical energy consumed ? Calculate the cost if the rate is 4 per unit.​

Answer 1

Answer:

5 bulbs each 100 W burn 4 hours per day then the total power consumption per day is 100 X 5 X 4 = 2000 W. The unit is 2000/1000 = 2 .The rate per day is 2 x 4.60 = 9.20 . So energy consumption per day is Rs. 9.20.

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Answer 2

Answer:

resistance of it is 400 ohm