A coil of 40 H inductance is connected i...

A coil of `40 H` inductance is connected in series with a resistance of `8` ohm and the combination is joined to the terminals of a `2 V` battery. The time constant of the circuit

`40`

`20`

`5`

`0.2`

Text Solution

Verified by Experts

`t = (L)/(R )`

Topper's Solved these Questions

ELECTRO MAGNETIC INDUCTION
NARAYNA|Exercise Level - III|64 Videos
ELECTRO MAGNETIC INDUCTION
NARAYNA|Exercise NCERT Based Questions|10 Videos
ELECTRO MAGNETIC INDUCTION
NARAYNA|Exercise Level -I (C.W)|26 Videos
ELECTRIC CHARGES AND FIELDS
NARAYNA|Exercise EXERCISE -4|43 Videos
ELECTRO MAGNETIC WAVES
NARAYNA|Exercise LEVEL-II(H.W)|14 Videos

Similar Questions

Explore conceptually related problems

An inductance of 2 H and resistance of 10 Omega are connected to a battery of 5 V. the time constant of the circuits is:

An ideal coil of 10H is connected in series with a resistance of 5(Omega) and a battery of 5V. 2second after the connections is made, the current flowing in ampere in the circuit is

A coil of inductance 0.20 H is connected in series with a switch and a cell of emf 1.6 V . The total resistance of the circuit is 4.0 Omega . What is the initial rate of growth of the current when the switch is closed?

A coil has an inductance of 0.5 H is connected in series with a resistance of 50 Omega to 240 V, 50 Hz AC. The maximum current in the circuit is

A coil of inductive reactance 31 Omega has a resistance of 8 omega . It is placed in series with a condenser of capacitive reactance 25 Omega . The combination is connected to an ac source of 110 V . The power factor of the circuit is

An inductance and a resistance are connected in series with an AC potential . In this circuit

A coil of induction 50 H is connected to a battery of emf 2 V through a resistance of 10 ohm. What is the time constant of the circuit and maximum value of current in the circuit ?

The resistance of a heater coil is 110 ohm . A resistance R is connected in parallel with it and the combination is joined in series with a resistance of 11 ohm to a 220 volt main line. The heater operates with a power of 110 watt. The value of R in ohm is

A coil of some internal resistance 'r' behaves line an inductance. When it is connected in series with a resistance R_(1) , the time constant is found to be tau_(1) . When it is connected in series with a resistance R_(2) , the time constant is found to be tau_(2) . The inductance of the coil is

A closed circuit consits of a source of constant and E and a choke coil of inductance L connected in series. The active resistance of the whole circuit is equal to R . At the moment t = 0 the choke coil inductance was decreased abrupty eta times. FInd the current in the circuit as a function of time t .

NARAYNA-ELECTRO MAGNETIC INDUCTION-Level-II (C.W)

A uniform magnetic field existsin region given by vec(B) = 3 hat(i) + ...
Text Solution
|
A conducting rod PQ of length 1 m is moving with uniform velocity of 2...
Text Solution
|
A time varying magnetic field is present in a cyclindrical region R as...
Text Solution
|
A metallic square loop ABCD is moving in its own plane with velocity v...
Text Solution
|
The flux linked with a coil is 0.8 Wb when a 2 A current is flowing th...
Text Solution
|
A solenoid of self inductance 1.2 H is in series with a tangent galvan...
Text Solution
|
There are two batteries 'A' and 'B' having same emf. A has no internal...
Text Solution
|
An emf induced in a secondary coil is 10000 V when the current breaks ...
Text Solution
|
A mutual inductor consists of two coils X and Y as shown in Fig. in wh...
Text Solution
|
A long solenoid of length L, cross section A having N(1) turns has abo...
Text Solution
|
A small coil of radius r is placed at the centre of a large coil of ra...
Text Solution
|
The coefficient of mutual inductance of two circuits A and B is 3 mH a...
Text Solution
|
The key 'K' is switched on at t = 0. Then the currents through battery...
Text Solution
|
The current in an L-R circuit builds upto 3//4th of its steady state v...
Text Solution
|
For the circuit shown, initially 'S' is closed for a long time so that...
Text Solution
|
A coil of inductance 1 H and resistance 10Omega is connected to a resi...
Text Solution
|
Current growth in two LR circuits (A) and (B) is as shown in figure (C...
Text Solution
|
In an LR circuit, current at t = 0 is 20 A. After 2 s it reduces to 18...
Text Solution
|
A chock coil has an inductance of 4H and a resistance of 2 Omega. It i...
Text Solution
|
A coil of 40 H inductance is connected in series with a resistance of ...
Text Solution
|