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Alternating Current Test - 41
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Alternating Current Test - 41
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  • Question 1/10
    4 / -1
    A fully charged capacitor C with initial charge q0, is connected to a coil of self inductanceL at t = 0. The time at which the energy is stored equally between theelectric and the magnetic fields is
    Solutions

  • Question 2/10
    4 / -1
    An ac voltage source of variable angular frequency ω and fixed amplitude V connected in series with a capacitance C and an electric bulb of resistance R (inductance zero). When ω is increased
    Solutions

  • Question 3/10
    4 / -1
    In the circuit shown in figure neglecting source resistance the voltmeter and ammeter reading will respectively be

    Solutions

  • Question 4/10
    4 / -1
    In the circuit shown in the figure, the ac source gives a voltage V = 20 cos (2000 t). Neglecting source resistance, the voltmeter and ammeter reading will be

    Solutions

  • Question 5/10
    4 / -1
    The reading of ammeter in the circuit shown will be

    Solutions

  • Question 6/10
    4 / -1
    Is it possible

    Solutions

  • Question 7/10
    4 / -1
    Which of the following curves represents the variation of impedance (Z) with frequency f in series LCR circuit
    Solutions

  • Question 8/10
    4 / -1
    The variation of the instantaneous current (I) and the instantaneous e.m.f. (E) in a circuit is as shows in fig.
    Which of the following statement is correct

    Solutions

  • Question 9/10
    4 / -1
    An alternating e.m.f is applied across a parallel combination of a resistance R, capacitance C and an inductance L. If IR, IL, IC are the currents through R, L and C respectively, then the diagram which correctly represents the phase relationship among IR, IL, IC and source e.m.f. E, is given by
    Solutions

  • Question 10/10
    4 / -1
    An ac source of variable frequency f is connected to an LCR series circuit. Which of the graphs in figure represents the variation of current I in the circuit with frequency f
    Solutions

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