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Energy Stored In An Inductor...

Energy Stored In An Inductor

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Energy Stored in an Indutor || Inductor in a Circuit

(a) Derive the expression for the magnetic energy stored in an inductor when a current I develops in it. Hence, obtain the expression for the magnetic energy density. (b) A square loop of sides 5 cm carrying a current of 0.2 A in the clockwise direction is placed at a distance of 10 cm from an infinitely long wire carrying a current of 1 A as shown in Fig. 6.66. Calculate (i) the resultant magnetic force, and (ii) the torque, if any, acting on the loop.

Knowledge Check

  • In oscillating Lc circuit, the total stored energy is U and maximum charge upon capacitor is (Q)/(2) , the energy stored in the inductor is

    A
    `(U)/(2)`
    B
    `(U)/(4)`
    C
    `(4)/(3) U`
    D
    `(3U)/(4)`

  • In an inductor of inductance L=100mH , a current of I=10A is flowing. The energy stored in the inductor is

    A
    `5J`
    B
    `10J`
    C
    `100J`
    D
    `1000J`

  • In the given at t = 0 , switch S is closed. The energy stored in the inductor at any instant t (0 lt t oo) will be

    A
    `(1)/(2) [5 - 5e^(-(1000//3)t)]^(2) mJ`
    B
    `(125)/(2) [1 - e^(-(1000//3)t)]^(2) mJ`
    C
    `(25)/(2) [1 - e^(-(1000//3)t)]^(2) mJ`
    D
    `(5)/(2) [1 - e^(-(1000//3)t)]^(2) mJ`

    • Similar Questions

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    In the steady state of the circuit shown in the figure the ratio of energy stored in the inductor to th energy stored in the capacitor is 10000.

    In an inductor L, current passed I_0 and energy stored in it is U. If the current is now reduced to I_0//2 , what will be the new energy stored in the inductor?

    Referring to the previous illustration find the energy stored in the inductor when the current l is dropped to a value of 5A .

    When a current I is established in a coil of self-inductance L, energy stored in the inductor is ______.

    In LR circuit, f = 50 Hz, L= 2 H, epsilon = 5V, R = 1 Omega , then the energy stored in the inductor is:

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