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PhysicsCurrent ElectricityElectrical PowerEasy2 minPYQ_2022
PhysicsEasynumerical

A resistor develops300 Jof thermal energy in15 s, when a current of2 Ais passed through it. If the current increases to3 A, the energy developed in10 sis _____J.

Answer:
450.00
Solution:

Energy produced is given by H=i2Rt

When i=2 A, t=15 s, energy is H=300=22×R×15

Resistance is R=5 Ω

When i=3 A, t=10 s.

Energy is H'=32×5×10=450 J

Stream:JEESubject:PhysicsTopic:Current ElectricitySubtopic:Electrical Power
2mℹ️ Source: PYQ_2022

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