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Two wires having resistance R and 2 R ar...

Two wires having resistance R and 2 R are connected in parallel, the ratio of heat generated in 2 R and R is

A

` 1 :2`

B

`2 : 1`

C

`1 :4`

D

`4 : 1`

Text Solution

Verified by Experts

The correct Answer is:
B
In parallel circuit potential across each resistor is same.
`therefore " " P_(1) = " power across " R=(V^(2))/(R )`
`P_(2) = " power across " 2R =(V^(2))/(2R)`
`(P_(1))/(P_(2))=2 :1`
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