Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical PowerEasy2 minPYQ_2020
PhysicsEasysingle choice

A coil of wire of resistance50 Ωis embedded in a block of ice and a potential difference of210 Vis applied across it. The amount of ice which melts in1second is [latent heat of fusion of ice =80 cal g-1]

Options:

Answer:
B
Solution:

Energy of melting is provided by electric energy therefore
mL=V2Rt
m(80)=(210)250(1)
m⁡=2.62 g

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical Power
⏱ 2mℹ️ Source: PYQ_2020

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