A solenoid coil is wound on a frame of rectangular cross section. If all the linear dimension of the frame are increased by a factor of two and the number of turns per unit length of the coil remains the same, the self-inductance increases by a factor of

The physical quantity which is measured in the unit of Wb $A^{-1}$ is

The unit of inductance is equivalent to

What is the SI unit of self-inductance ?

Two concentric co-planar circular loops of radii $r _1$ and $r _2$ carry currents of respectively $i _1$ and $i _2$ in opposite directions (one clockwise and the other anticlockwise.) The magnetic induction at the centre of loops is half that due to $i _1$ alone at the centre. If $r _2 = 2r _1$. the value of $i _2 / i _1$ is 

When the number of turns in a solenoid is doubled without any change in the length of the solenoid, its self-inductance becomes :

Which of the following does not have the same dimensions as the Henry?

The inductance is measured in 

Alternating current is flowing in inductance L and resistance R. The frequency of source is $\displaystyle\frac{\omega}{2\pi}$. Which of the following statement is correct.

A student measures the terminal potential difference (V) of a cell (of emf $\varepsilon$ and internal) resistance r) as a function of the current (I) flowing through it. The slope and intercept of the graph between V and I, then respectively equal to :

If circular coil with $N _{1}$ turns is changed in to a coil of $N _{2}$ turns. What will be the ratio of self inductances in both cases.

If the number of turns per unit length of a coil of a solenoid is doubled the self-inductance of the solenoid will:

Henry, the SI unit of inductance can be written as :

Multiple Correct Answers Type
The SI unit of inductance, henry, can be written as

A lossless coaxial cable has a capacitance of $7\times { 10 }^{ -11 }$ F and an inductance of $0.39\mu H$. Calculate characteristic impedance of the cable.

A source of 220 V is applied in an A C circuit . The value of resistance is 220 $\Omega$. Frequency & inductance are 50Hz & 0.7 H then wattless current is 

The time constant of a circuit is 10 sec, When a resistance of $ 100 \Omega $ is connected in series in a previous circuit then time constant becomes 2 second,then the self inductance of the circuit is;-

the number of turn of primary and secondary coil of the transformer is 5 and 10 respectively ad the mutual inductance is 25 H. if the number f turns of the primary and secondary is made 10 and 5 , then the mutual inductance of the coils will be

The coefficients of self induction of two inductance coils arc 0.0 1H and 0.03H respectively. When they are connected in series so as to support each other. then the resultant self inductance becomes 0.06 Henry. The value of coefficient of mutual induction will be-

In an induction coil, the coefficient of mutual induction is 4 henry. If a current of 5 ampere in 1  the primary coil is cut off in $\frac { 1 }{ 1500 } $s, the e.m.f at the terminals of the secondary coil will be:

The inductance is measured in 

if the length and area of cross section of an inductor remain same but the number of turns is doubled its self inductance will become:

The SI unit of inductance, the henry, can be written as :

If a spark is produced on removing the load from an AC circuit then the element connected in the circuit is

If N is the number of turns in a coil, the value of self-inductance varies are

Which of the following units denotes the dimensions ${M}{L}^{2}/{Q}^{2}$, where ${Q}$ denotes the electric charge?

If $N$ is the number of turns in a circular coil then the value of self inductance varies as

A magnetic field of $2\times {10}^{-2}T$ acts at right angles to a coil of area $100{cm}^{2}$ with $50$ turns. The average emf induced in the coil is $0.1V$. When it is removed from the field in $t$ second, the value of $t$ is

The inductive reactance of a coil of $0.2H$ inductance at a frequency of $60Hz$ is:

The SI unit of inductance, the henry, can be written as :

A long solenoid with length $l$ and a radius $R$ consists of $N$ turns of wire,Neglecting the end effects, find the self-inductance.

If cross section area and length of a long solenoid are increased 3 times then its self-inductance will be changed how many times-

Self inductance of a long solenoid depends upon following(s)-

Self-Inductance of a Long Solenoid is proportional to(where $r$ is radius of solenoid)-

Area of a long solenoid is doubled.So how many times we have to increase its length to keep its self inductance constant-

If radius of long solenoid is doubled, then its self inductance will be :

If length of a solenoid is increased then what change should be made on no. of turns to keep self inductance constant-

Self inductance of long solenoid is directly proportional to-($A$ is area of cross section)

If radius of long solenoid is reduced to half of original without changing other physical factor,then its self inductance will change-

Self inductance $L$ of long solenoid is being proportional to the number of turns $N$ as-

If the number of turns and length of the long solenoid are doubled without changing the area, then its self-inductance $L$ will be:

Self inductance of a long solenoid is directly proportional to-
(Where $L$ is the length of solenoid)

Self inductance of a long solenoid is directly proportional to 
($N$ is no. of turns in solenoid)

If area of a long solenoid is doubled,length is trippled and no. of turns are remained contant.Then its self-inductance will be changed how many times-

When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage

Reactance of a coil is $157\Omega$. On connecting the coil across a source of frequency $ 100Hz$, the current lags behind e.m.f. by ${ 45 }^{ o }$. The inductance of the coil is _________.

The electrical analog of mass is

Which of following circuit element stores energy in electromagnetic field?

Find the necessary inductance. if 110 V, 10 W rating bulb is to be used with 220 V A.C source having frequency 50 Hz.