List of top Physics Questions on Inductance

A current of $2 \text{ A}$ produces a magnetic flux of $10^{-3}$ weber per turn in a coil of $1000$ turns. Then, the self-inductance of the coil is

લંબાઈ \( l \) અને ત્રિજ્યા \( r \)વાળા એક લાંબા સોલેનોઇડને ધ્યાનમાં લો. જો \( n \) એકમ લંબાઈ દીઠ ટર્ન્સની સંખ્યા છે અને \( \mu_0 \) મુક્ત અવકાશની પરાવર્ત્યતા છે, તો સોલેનોઇડની ઇન્ડક્ટન્સ છે:

If the energy stored in an inductor is 18 mJ when a current of 3 A is passed through it, then the magnetic flux linked with the inductor is

A solenoid of resistance \(40\,\Omega\) and inductance \(80\,H\) is connected to a \(200\,V\) battery. How long will it take the current to reach \(50\%\) of its final equilibrium value?

The mutual inductance of a pair of adjacent coils is 5 H. If the current in one coil changes from 0 to 12 A in a time of 0.75 s, then the change of flux linkage with the other coil is:

When 3 A dc is passed through a coil of 32 mH inductance, The energy stored in the coil

An inductor of inductance $10 \text{ mH}$ having resistance of $100 \text{ } \Omega$ is connected to battery of E.M.F. $1.0 \text{ V}$ through a switch as shown in the figure below. After switch is closed, the ratio of instantaneous voltages across the inductor when the current passing through it is $2 \text{ mA}$ and $4 \text{ mA}$ is ________.

A cylindrical object of density $600\,\text{kg/m}^3$ and height $8$ cm is floating in a liquid of density $900\,\text{kg/m}^3$. Find height of cylinder inside liquid.

A coil is wound on a core of rectangular cross section. If all the linear dimensions of core are increased by a factor 3 and number of turns per unit length of coil remains same, the self inductance increases by a factor

A coil of wire of radius 'r' has 600 turns and a self-inductance of 108 mH. The self-inductance of a coil with same radius and 500 turns is ______.

Two circuits A and B are connected to identical d.c. sources each of e.m.f. 10 volt. Self-inductances are $L_A = 10$ H and $L_B = 10$ mH. The total resistance of each circuit is 40 $\Omega$. The ratio of energy consumed in circuit A and circuit B to build up the current to steady value is ______.

If $L$ is the inductance and $R$ is the resistance then the SI unit of $\frac{L}{R}$ is

Two planar concentric rings of metal wire having radii $\text{r}_1$ and $\text{r}_2$ ( $\text{r}_1 > \text{r}_2$ ) are placed in air. The current $\text{I}$ is flowing through the coil of larger radius. The mutual inductance between the coils is given by ( $\mu_0 =$ permeability of free space)}

A coil of self-inductance $L$ is connected in series with a bulb and an a. c. source. Brightness of the bulb decreases when

If $L$ is the inductance and $R$ is the resistance then the SI unit of $\frac{L}{R}$ is

An e.m.f of 5 volts is produced by a self-inductance when the current changes at a steady rate from 3A to 2A in 1 millisecond. The value of self-inductance is:

If \( L \) is the inductance and \( R \) is the resistance, then the unit of \( \frac{L}{R} \) is:

The dimensions of the coefficient of self-inductance are:

Find the mutual inductance in the arrangement, when a small circular loop of radius R is placed inside a large square loop of side \(L\) (\(L \gg R\)). The loops are coplanar and their centers coincide:

A small square loop of wire of side l is placed inside a large square loop of wire L(L>>l). As shown in figure, both loops are coplanar and their centers coincide at point O. The mutual inductance of the system is:

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

The self inductance of a solenoid of length $31.4 \text{ cm}$, area of cross section $10^{-3} \text{ m}^2$ having total number of turns $500$ will be nearly [$\mu_0 = 4\pi \times 10^{-7}$ SI unit]

If the current of $I\text{ A}$ gives rise to a magnetic flux $\phi$ through a coil having $N$ turns, then magnetic energy stored in the medium surrounding the coil is