Question

a current of 2 ampere produced 200 joule of heat in a wire in a given period of time if the current is increased to 4 ampere how much heat will be produced in same time

Answer 1

Hey dear,

Heat =I²R
So,200 joule of heat=(2)²*R
R=200/4=>50 ohm
So,for 4 ampere
Heat =(4)²*50
=>16*50
=>800 joule
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Answer 2

Answer:

800 joule

Step-by-step explanation:

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we know that H=I²RT

case 1

200=2²*RT

RT=200/4=50

case 2

H=4²RT

since resistance and temperature and time remain same for the second case

we substitute the value of RT from case 1

H=4²*50=16*50=800  joule

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Hope it helps!!