43.A coil having zero resistance is connected in series with a 90ohm resistance and the combination in connected to 120V ,60Hz A voltmeter reads 36V across the resistance and 114V across the coil the self inductance of the coil is 1)0.076H 2)0.76H 3)7.6H 4)76H

Open in App

Solution

Suggest Corrections

Similar questions

Q. A coil of negligible resistance is connected in series with a 90

Ω

resistor across a 120 V, 60 Hz line. An ac voltmeter reads 90 V across the resistance, then the inductance of the coil is approximately

Q. A coil of self inductance

2 \cdot 5 H

and resistance

20 Ω

is connected to a battery of emf 120V having internal resistance of

5 Ω

. Find the current in the circuit in steady state.

Q. A coil of self inductance

2 \cdot 5 H

and resistance

20 Ω

is connected to a battery of emf 120V having internal resistance of

5 Ω

. Find the time constant of the circuit.

Q. A 120V, 60Hz a.c. power is connected 800

Ω

non-inductive resistance and unknown capacitance in series. The voltage drop across the resistance is found to be 102V, then voltage drop across capacitor is

Two coils have a combined resistance of 25 ohms, when connected in series and a resistance of 4 ohms when connected in parallel. What is the resistance of each coil?

Join BYJU'S Learning Program

Select...