Question

A coil has reactance 100ohm frequency 50hz . If frequency became 150 hz reactence

Answer 1

We know that

Reactance of a capacitor is

XC=12πfC

Given that XC1=20Ω at 50 Hz

Then XC2at 100 Hz will be

XC1XC2=12πf1C12πf2C

Then on simplifying we get

XC1XC2=f2f1

XC2=202

Therefore the new reactance of the capacitor is

XC2=10Ω

Answer 2

Answer:

this is the answer

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