Verified Solution • 2025–26 Session moderate

QNEET-2016-Ph-1142: NEET 2016 Physics - Class 12 NEET-2016-Ph-1142 Solution: A filament bulb (500 W 100 V) is to be used in a 230 V main…

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 is

230\Omega

46\Omega

26\Omega

13\Omega

Multiple Choice Options

A 230 $\Omega$ �
B 46 $\Omega$ �
C 26 $\Omega$ �
D 13 $\Omega$ �

Step-by-Step Verified Solution

Resistance of bulb, R B = V 2 P = ( 100 ) 2 500 = 20 � Power of the bulb in the circuit, P = VI I = P V B = 500 100 = 5 A V R = IR _ (230 � 100) = 5 _ R _ R = 26 �

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