1.

Two heating coils of resistance 10Omega and 20Omega are connected in parallel and connected to a battery of emf 12V and internal resistance 1Omega. The power consumed by them are in the ratio

Answer»

`1:4`
`1:3`
`2:1`
`4:1`

SOLUTION :`P=(V^(2))/(R ),Pprop(1)/(R )`
`(P_(1))/(P_(2))=(R_(2))/(R_(1))=(20)/(10)=(2)/(1)` for constant V


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