Subject Category > General Science

Q. How many 100 watt bulbs on the supply of 220 volts can be safely used with 5 ampere fuse?

A) 5

B) 8

C) 11

D) 20

โœ” 11

Additional Information > Exam point of View

To calculate the number of 100-watt bulbs that can be safely used with a 5-ampere fuse on a 220-volt supply, we use the formula: Power (W) = Voltage (V) ร— Current (I). The total power available with a 5-ampere fuse on a 220-volt supply is 220 ร— 5 = 1100 watts. Since each bulb uses 100 watts, the number of bulbs that can be safely used is 1100 รท 100 = 11 bulbs.

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