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A wire when connected to 220V mains supply has power dissipation P1.

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asked Mar 24, 2018 in Physics by paayal (26,720 points) ● 4 ● 6 ● 11

A wire when connected to 220V mains supply has power dissipation P1. Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is P2. Then P2 : P1 is

(a) 1 

(b) 4 

(c) 2 

(d) 3.

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answered Mar 24, 2018 by sanjaydas (61,430 points) ● 5 ● 7 ● 7
selected Mar 26, 2018 by Vikash Kumar
 
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