Question
In what form is the energy stored in an inductor
✓
Answer
(a) Energy stored $ = \frac{1}{2}L{i^2},$ where $Li$ is a magnetic flux.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The output $\mathrm{Y}$ of following circuit for given inputs is :
→The activity of a radioactive sample
In the following figure $r_1$ and $r_2$ are $5\, cm$ and $30\, cm$ respectively. If the moment of inertia of the wheel is $5100\, kg-m^2$ then its angular acceleration will be
→Two long straight parallel wires, carrying (adjustable) current $I_1$ and $I_2$, are kept at a distance $d$ apart. If the force $'F'$ between the two wires is taken as 'positive' when the wires repel each other and 'negative' when the wires attract each other, the graph showing the dependence of $'F'$, on the product $I_1 I_2$, would be
→The pressure $P,$ volume $V$ and temperature $T$ of a gas in the jar $A$ and the other gas in the jar $B$ at pressure $2P,$ volume $V/4$ and temperature $2T,$ then the ratio of the number of molecules in the jar $A$ and $B$ will be
→A soap bubble in a form of circular tube having radius of curvature $R$ and radius of curvature perpendicular to it is $5R$ . Find the excess pressure in the bubble :
→If two glass plates have water between them and are separated by very small distance ( see figure), it is very difficult to pull them apart. It is because the water in between forms cylindrical surface on the side that gives rise to lower pressure in the water in comparison to atmosphere. If the radius of the cylindrical surface is $R$ and surface tension of water is $T$ then the pressure in water between the plates is lower by
→Assertion : Diamagnetic materials can exhibit magnetism.
Reason : Diamagnetic materials have permanent magnetic dipole moment.
In a series resonant $L-C-R$ circuit, the voltage across $R$ is $100\,V$ and $R = 1\,k\Omega $ with $C = 2\,\mu F$ . The resonant frequency $\omega $ is $200\,rad\,s^{-1}$ . At resonance the voltage across $L$ is.....$V$
→Two springs with spring constants ${K_1} = 1500\,N/m$ and ${K_2} = 3000\,N/m$ are stretched by the same force. The ratio of potential energy stored in spring will be
→