A circuit has a self inductance of 1H an...

A circuit has a self inductance of 1H and carries a current of 2A. To prevent sparking when the circuit is switched off, a capacitor which can withstand 400V is used. The least capacitance of the capacitor connected across the switch must be equal to

`50muF`

`25muF`

`100muF`

`12.5muF`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

NTA NEET SET 99
NTA MOCK TESTS|Exercise PHYSICS|45 Videos
NTA NEET TEST 102
NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A circuit having a self inductance of 1 henry carries a current of 1 A. To prevent the sparking when the circuit is broken, a capacitor which can withstand 500 V is connected across the switch. What is the minimum value of the capacitance of the capacitor?

An inductance of 2H carries a current of 2A . To prevent sparking when the circuit is broken a capacitor of 4muF is connected across the inductance. The voltage rating of the capacitor is of the order of

In the circuit shown, the capacitor is initially uncharged. The switch S is closed at t = 0. Time after which voltage across capacitor and resistor are equal is:

Find out current in the circuit and charge on capacitor which is initially uncharged in the following situations After a long time when switch was closed.

In the circuit shown in fig. C_1 = 2C_2 Initially, capacitor C_1 is charged to a potential of V. The current in the circuit just after the switch S is closed is

Find out current in the circuit and charge on capacitor which is initially uncharged in the following situations. (a) Just after the switch is closed (b) After a long time when switch was closed.

Find out current in the circuit and charge on capacitor which is initially uncharged in the following situations. (a) Just after the switch is closed. (b) After a long time when switch was closed.

A certain oscillating circuit consits of a capacitor with capacitance C , a coil with inductance L and active resistance R , and a switch . When the swith was disconnected, the capacitor was charged, then the switch was closed and oscillations set in. Find the ratio of the voltage across the capacitor to its peak value at the moment immediatel after closing the switch.

Condsider . In the circuit shown is the switch can be shifted to positions 1 and 2 The charge on capacitor C_(1) when the switch is at position 1 is.

Two capacitors of capacitance 2muF and 5muF are charged to a potential difference 100V and 50 V respectively and connected such that the positive plate of one capacitor is connected to the negative plate of the other capacitor after the switch is closed, the initial current in the circuit is 50 mA. the total resistance of the connecting wires is (in Ohm):

NTA MOCK TESTS-NTA NEET TEST 101-PHYSICS

A circular current carrying coil has a radius R. The distance from the...
Text Solution
|
Two long concentric cylindrical conductors of radii a and b (b lt a) ...
Text Solution
|
A circuit has a self inductance of 1H and carries a current of 2A. To ...
Text Solution
|
The ratio of acceleration due to gravity at a height 3 R above earth's...
Text Solution
|
A particle is pulled along a curved surface very slowly. The coefficie...
Text Solution
|
A metallic sphere cools from 50^(@)C to 40^(@)C in 300 seconds. If the...
Text Solution
|
Two moles of an ideal gas at temperature T(0) = 300 K was cooled isoch...
Text Solution
|
A gas does 4.5 J of external work during adiabatic expansion. If its t...
Text Solution
|
Two short bar magnets with magnetic moments 400 ab– "A cm"^2 and 800 a...
Text Solution
|
A particle of mass M and charge Q moving with velocity v describes a c...
Text Solution
|
A boat covers 24 km upstream and 36 km downstream in 6 hours while ...
Text Solution
|
From the ground, a projectile is fired at an angle of 60 degree to th...
Text Solution
|
A ball of mass 150 g starts moving with an acceleration of 20m//s^(2)....
Text Solution
|
A block B is pushed momentarily along a horizontal surface with an ini...
Text Solution
|
A nucleus .n^mX emits one alpha particle and two beta^- particles .The...
Text Solution
|
Amongst the three isotopes of Neon - .(10)^(20)Ne,.(10)^(21 )Ne and (1...
Text Solution
|
The variation of the potential energy of harmonic oscillator is as sho...
Text Solution
|
The path length of oscillation of simple pendulum of length 1 m is 16 ...
Text Solution
|
The correctness of velocity of an electron moving with velocity 50 ms^...
Text Solution
|
The sun radiates electromagnetic energy at the rate of 3.9xx10^(26)W. ...
Text Solution
|