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A current of 6 A flows in a coil when co...

A current of 6 A flows in a coil when connected to a dc source of 18 V. If the same coil is connected to an ac source of 20 V, 50 rad/s, a current of 4 A flows in the circuit. The inductance of the coil is 10x mH. Find out the value of x.

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A current of 4A flows in a coil when connected to a 12V DC source. If the same coil is connected to a 12V, 50 rad//s AC source, a current of 2.4A flows in the circuit. Determine the inductance of the coil. Also, find the power developed in the circuit if a 2500muF capacitor is connected in series with the coil.

When a 15 V dc source was applied across a choke coil then a current of 5 Amp flows in it. If the same coil is connected to a 15 V, 50 rad/s ac source a current of 3 Amp flows in the circuit. Determine the inductance of the coil. Also find the power developed in the circuit and its resonance frequency if a 2500 muf capacitor is connected in series with the coil

Knowledge Check

  • A current of 4 A flows in a coil when connected to a 12 V dc source. If the same coil is connected to a 12 V, 50 rad s^(-1) ac source, a current of 2.4 A flows of the coil in the circuit. The inductance of the coil is

    A
    0.02H
    B
    0.04H
    C
    0.08H
    D
    1.0H

  • A steady 4 A flows in an inductor coil when connected to a 12 V source as shown in figure. If the same coil is connected to an ac source of 12 V , 50 "rad"//s a currentd of 2.4 A flows in the circuit as shown in figure2. Now after these observations , a capacitor fo capacitance (1)/(50) F is connected in series with the coil and with same AC source as shown in figure 3. The resistance of the coil is:

    A
    `1 Omega`
    B
    `2 Omega`
    C
    `3 Omega`
    D
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  • A current of 4 A flows in a coil when connected to a 12 V dc source. If the same coil is connected to a 12 V, 50 rad s^(-1) ac source, a current of 2.4 A flows of the coil in the circuit. The power developed in the circuit of a 2500 (mu)F capacitor that is connected in series with the coil is

    A
    17.28 W
    B
    8.64 W
    C
    10 W
    D
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