Q. 8

# An electric bulb

Given

The operating voltage is V and power consumed is P.

Therefore, the resistance of the bulb can be calculated as follows,

Putting the values in the above formula, we get

The power fluctuations is given as p = 150 W

So, the voltage fluctuation that the bulb can withstand is given by-

Resistance of the bulb,

Where

V is the velocity

P is the power fluctuations

Hence the bulb will withstand fluctuations up to 270 V.

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