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1)How to calculate rate of change of induced emf at different time instantwhen inductance, resistance, emf of battery is given.(if u will aski will post the complete ques)2)A coil of resistance 300 ohms and inductance 1 henry is connected across a voltage source of freq 300/2pie hertz. Calculate the phase differnce b/w voltage and current in circuit.Rates assured. Reply sooooon.

Radhika Batra , 11 Years ago
Grade 11
anser 1 Answers
ROSHAN MUJEEB

Last Activity: 4 Years ago

1)please post complete question for more clarity
2)
Solution :
XL=2πfL=2π×3002π×1=300Ω,R=300ΩXL=2πfL=2π×3002π×1=300Ω,R=300Ω
tanϕ=XLR=1⇒ϕ=π4tanϕ=XLR=1⇒ϕ=π4(lagging)

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