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#### A filament bulb (500 W, 100 V) is to be used in a 230 V main supply. When a resistance R is connected in series, it works perfectly and the bulb consumes 500 W. The value of R Option 1) 230  Option 2) 46  Option 3) 26  Option 4) 13

As discussed in

if R=r -

- wherein

Power delivered will be maximum

Option 1)

230

This option is incorrect.

Option 2)

46

This option is incorrect.

Option 3)

26

This option is correct.

Option 4)

13

This option is incorrect.