1.

An electric heater of resistance 5 Omega is connected to an electric source. If a current of 6 A flows through the heater, then find the amount of heat produced in 5 minutes.

Answer»

Solution :GIVEN RESISTANCE `R=5Omega`, CURRENT `I=6A`,
Time `t=5` MINUTES `=5xx60s=300s`
Amount of heat produced, `H=I^(2)RT`
`H=6^(2)xx5xx300`. Hence, `H=54000J`


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