Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityElectrical PowerEasy2 minPYQ_2017

PhysicsEasysingle choice

In the circuit shown, the heat produced in $5 Ω$ resistor is $10 cal s^{- 1}$ . The heat produced per sec in $4 Ω$ resistor will be

Answer:

Solution:

$H = I^{2} R t$

$∴ \frac{H_{1}}{H_{2}} = {(\frac{l_{1}}{I_{2}})}^{2} \times (\frac{R_{1}}{R_{2}})$

or $\frac{10}{H_{2}} = [\frac{1}{(\frac{1}{2})}] \times \frac{5}{4}$

$H_{2} = 2 cal$

Stream:BITSATSubject:PhysicsTopic:Current ElectricitySubtopic:Electrical Power

⏱ 2mℹ️ Source: PYQ_2017

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