Current Electricity and Electrical InstrumentEasy

Question

A wire when connected to 220 V 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

Options

A.1
B.4
C.2
D.3

Solution

P1 = V2/R ; P2 =

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