Questions
What is the ratio of heat generated in R and 2R?
a
2 : 1
b
1 : 2
c
4 : 1
d
1 : 4
detailed solution
Correct option is A
Both R and 2R in parallel V−constantSo using P=V2R ⇒ P1P2 = R2R1⇒H1H2= R2R1=21Talk to our academic expert!
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A resistor R is connected across a battery of emf 12 V. It observed that terminal potential differenceis 9 V and the power delivered to resistor is 18 W. Internal resistance of the battery ‘r’ and the resistance R are respectively
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