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2 A and 3A currents are passe3d through ...

2 A and 3A currents are passe3d through the heating element of an electrical iron box. The ratio of quantity of heat evolved is ______

A

`2:3`

B

`3:2`

C

`4:9`

D

`9:4`

Text Solution

Verified by Experts

The correct Answer is:
C
`H alpha I^(2) :. H_(1) alpha I_(1)^(2), H_(2) alpha^(2)`
`(H_(1))/(H_(2))=(I_(1)^(2))/(I_(2)^(2))=((2)^(2))/((3)^(2))=(4)/(9)`
`H_(1):H_(2)=4:9`
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