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2002
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Q)
A wire when connected to 220 V mains supply has power dissipation $P_1$. Now the wire is cut into two equal piece which are connected in parallel to the same supply. Power dissipation in this case is $P_2$. Then $P_2 : P_1$ is :
( A ) 3
( B ) 1
( C ) 4
( D ) 2
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