Home
Class 12
PHYSICS
An emf of 15 V is applied in a circuit c...

An emf of 15 V is applied in a circuit coil containing 5 H inductance and `10Omega` resistance. The ratio of the currents at time `t=oo` and t = 1 s is

A

`(e^(2))/(e^(2)-1)`

B

`1-e^(-1)`

C

`e^(-1)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

An emf of 15 V is applied in a circuit containing 5 H inductance and 10 Omega resistance. The ratio of the currents at time t = oo and t = 1 s is

An alternating emf of 110 V is applied to a circuit containing a resistance R of 80 Omega and an inductor L in series. The current is found to lag behind the supply voltage by an angle theta=tan^(1) (3//4) . Find the : If the inductor has a coefficient of self inductance of 0.1 H, what is the frequency of the applied emf ?

An alternating emf of 110 V is applied to a circuit containing a resistance R of 80Omega and an inductor L in series. The current is found to lag behind the supply voltage by an angle theta=tan^(-1)(3//4) . Find the : (i) Inductive reactance (ii) Impedance of the circuit (iii) Current flowing in the circuit (iv) If the inductor has a coefficient of self inductance of 0.1 H. What is the frequency of the applied emf?

An e.m.f. E=4cos(1000t) volt is applied to an LR circuit of inductance 3mH and resistance 4ohm . The amplitude of current in the circuit is

Find the ratio of the currents at time t = oo and t = 1 s , if an emf of 15 V is applied in a circuit containing 5 H inductance and 10 Omega resistance.

In a LR circuit of 3 mH dinductance and 4 Omega resistance, emf E=4cos 1000t volt is applied. The amplitude of current is

A 50 Hz AC signal is applied in a circuit of inductance of (1//pi) H and resistance 2100Omega. The impedance offered by the circuit is

An alternating emf of 200V, 50Hz is applied to an L-R circuit, having a resistances R of 10Omega and an inductance L of 0.05H connected in series. Calculate: Current flowing in the circuit

An alternating emf of 200V, 50Hz is applied to an L-R circuit, having a resistances R of 10Omega and an inductance L of 0.05H connected in series. Calculate: Impedance

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