Questions
When a current of 2A flows through a metallic wire of radius 1 mm, rate of heat generation is 24 watt. What will be the rate of heat generation when 5 A current flows through a metallic wire made of same material and having same length and radius 2 mm?
detailed solution
Correct option is A
P∝i2/r2⇒P1P=i1i2rr12=522122=258⇒P1=258×24 W=75 WTalk to our academic expert!
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