Electric Circuits Objective Questions
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The power dissipated in a pure capacitor is
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Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open
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For making a capacitor, it is better to select a dielectric having
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Two resistances R_{1} and R_{2} are connected in series across the voltage source where R_{1} > R_{2}. The largest drop will be across
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Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be
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When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of heater will
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The capacitance of a parallel plate capacitor can be varied by
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If the dielectric of a capacitor is replaced by conducting material
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A current of 1 mA flows through a 1 Mohm, 2 W carbon resistor. The power dissipated as heat in the resistor will be
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Which resistor will be physically larger in size ?
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Two resistor are said to be connected in parallel when
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The energy stored by a capacitor is given by
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Which of following materials has the least resistivity ?
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A variable capacitance is one whose capacitance
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The electrical resistance of human body is around
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If C be the capacitance, V be the potential difference and I be the current, then I / CV will have the unit of
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A capacitor
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When current flows through heater coil it glows but supply wiring does not glow because
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Which of the following are typical resistance and powerdissipation values for a carbon composition resistor ?
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Which of the following carbon coded resistor has value of 10 kohm with 20% tolerance ?
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The maximum current rating for a 10 k Ω, 0.5 W resistor is
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A resistance having rating 10 ohms, 10 W is likely to be a
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Which of the following quantities remain the same in all parts of a parallel circuit
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Internal resistance of ideal voltage source is
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In RLC parallel circuit circuit current through inductor is more than current through capacitor. Then what is the power factor of the circuit?
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A 3 Ω resistor having 2 A current will dissipate the power of
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Which quantity consists of a unit 1KWh ?
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In a capacitor, the electrcal energy is stored in
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The filament of an electric bulb is made of
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Internal heating of a capacitor is usually attributed to
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