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In the following circuits heat produced ...

In the following circuits heat produced in the resistor or combination of resistors connected to a 12 V battery will be

A

same in all the cases

B

minimum in case (i)

C

maximum in case (ii)

D

maximum in case (iii)

Text Solution

Verified by Experts

The correct Answer is:
D
Net resistance in case (i) `R_(1)=2 omega`
Net resistance in case (ii) `R_(2)=2+2=4 omega`
Net resistance in case (iii) `(1)/(R_(3))=1/2+1/2 rarr R_(3)=1 omega`
voltage in the three cases for equivalent resistance is same
So `H prop (1)/(R )`
Now value of net resistance is minimum in case (iii) so heat produced will be maximum
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