Home
Class 12
PHYSICS
A pure inductance of 1.0H is connected a...

A pure inductance of 1.0H is connected across a 110V, 70Hz Source. Find the (a) reactanace, (b) current and (c ) peak value of current.

A

330 `Omega`

B

450 `Omega`

C

440 `Omega`

D

400 `Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
`440Omega`
Explanation: `L=1H,f=70" Hz"`
`X_L=2pifL`
`=2pixx70xx1`
`=140pi`
`=440Omega`
Promotional Banner

Similar Questions

Explore conceptually related problems

A 15.0 mu F capacitor is connected to a 220 V, 50 Hz source. Find the capactive reactance and the current (rms and peak) in the circuit. If the frequency is doubled. What happens to the capactive reactance and current ?

A pure inductor of 25.0 mH is connected to a source of 220 V. Find the inductive reactance and rms current in the circuit if the frequency of the source is 50 Hz.

A capacitor of capacitance 100 muF and a coil of resistance 50 Omega and inductance 0.5 H are connected in series with a 110 V, 50 Hz AC source. Find the rms value of the current.

A 100 Omega resistance and a capacitor of 100 Omega reactance are connected in series across a 220 V source. When the capacitor is 50% charged, the peak value of the displacement current is

A 0.7 henry inductor is connected across a 120 V-60 Hz AC source. The current in the inductor will be very nearly

A coil having a resistance of 50.0 Omega and an inductance of 0.500 henry is connected to an AC source of 110 volts, 50.0 cycle/s. Find the rms value of the current in the circuit.

An ideal inductor of inductance 50muH is connected to an AC source of 220V, 50 Hz. Find the inductive reactance.

A resistance of 20 Omega is connected to a source of alternating current rated 110 V, 50 Hz . Find (a) the rms current, (b) the maximum instantaneous current in the resistor and (c) the time taken by the current to change from its maximum value to the rms value.

A 0.21 H inductor and a 12 Omega resistance are connected in series to a 220 V, 50 Hz ac source. the phase angle between the current and the source voltage is

A coil of inductance 0.2 H and 1.0 ohm resistance is connected to a 90 V source. At what rate will the current in the coil grow at the instant the coil is connected to the source?