Home
Class 12
PHYSICS
An ideal inductive coil has a resistance...

An ideal inductive coil has a resistance of `100Omega` When an ac signal of frequency `100Hz` is applied to the coil the voltage leads the current by `45^(@)` The inductance of the coil is .

A

` 1 / 10 pi `

B

`1 / 20 pi `

C

`1 / 40 pi `

D

` 1 / 60 pi `

Text Solution

Verified by Experts

The correct Answer is:
B
tan`phi` = `underset(L)(X)/R`
`therefore tan 45^(@)` = Lomega/R`
`adr L = R/omega = 100 / 2pi xx 1000` [since tan `45^(@)` = 1]
`adr L= 1/20pi`
Promotional Banner

Similar Questions

Explore conceptually related problems

An ideal inductive coil has a resistance of 100gamma When an ac signal of frequency 100Hz is applied to the coil the voltage leads the current by 45^(@) The inductance of the coil is .

An inductive coil has a resistance of 100 Omega . When an AC signal of frequency 1000 Hz is applied to the coil, the voltage leads the current by 45^(@) . What is the inductance of the coil?

An inductance coil has a reactance of 100Omega.When an ACsignal of frequency 1000Hz is applied to the coil the applied voltage leads the current by "45^(@The self-inductance of the coil is: (A) "6.7times10^(-7)H],[" (В) "5.5times10^(-5)H],[" (C) "1.1times10^(-1)H],[" (D) "1.1times10^(-2)H]]

An inductive coil has resisatance of 100 Omega . When an ac sinal of frequency 1000 Hz is fed to the coil. The applied voltage leads the current by 45^(@) . What is the inductance of the coil?

" A coil has an impedance of "10Omega" ,when an AC signal of frequency "(100)/(pi)Hz" ,is applied to the coil.The voltage leads the current by "45^(@)" ,the inductance of coil is "

A coil has an impedance of 10Omega ,when an ACsignal of frequency (100)/(pi)Hz ,is applied to the coil The voltage leads the current by 45 degree ,the inductance of coil is

When an AC signal of frequency 1 kHz is applied across a coil of resistance 100 Omega , then the applied voltage leads the current by 45^@ . The inductance of the coil is

A coil has reactance of 100Omega when frequency is 50Hz. If the frequency becomes 150Hz, then the reactance will be –

A coil has inductance of (11)/(5pi)H and is joined in series with a resistance of 220Omega . When an alternating emf of 220V at 50Hz is applied to it, then the wattless component of the current in the circuit is