Electric Circuits Objective Questions
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If the three colour bands of a resistor are grey, violet and gold, what is the value of the resistor?
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Three element having conductance G_{1}, G_{2} and G_{3} are connected in parallel. Their combined conductance will be
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Which of the following may be value of resistivity of copper?
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Which of the following may be value of resistivity of copper at absolute zero in n ohm metre
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Which variety of copper has the best mechanical strength ?
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Conductance of any conductor is expressed as
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Two 1 kΩ, 1 W resistors are connected in series. Their combine resistance and wattage will be
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In balanced bridge, if the positions of detector and source are interchanged, the bridge will still remain balanced. This can be explained from which theoem
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Two equal resistors R connected in series across a voltage source V dissipate power P. What would be the power dissipated in the same resistors when they are connected in parallel across the same voltage source ?
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A circuit contains two unequal resistor in parallel
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An ac voltage source v = v_{o} sinω+ is connected across a parallel plate capacitor C. If conductor current & i_{d} respectively then which is true among following relation
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If the length of a wire of resistance R is uniformly stretched to n times its original value, what will be its new resistance
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Which variety of copper has the best conductivity ?
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The ratio of the resistance of a 200 W, 230 V lamp to that of a 100 W, 115 V lamp will be
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The electrical conductivity of metal is typically of the order of (in ohm  m)
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The resistivity of the conductor depends on
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What will be the resistance if 10 resistors of 10 ohm each is connected in series
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Two identical resistors are first connected in parallel then in series. The ratio of resultant resistance of the first combination to the second will be
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Poorest conductor of electricity is
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An ac voltage source v = v_{o} sinωt is connected across a parallel plate capacitor C. If conductor current & i_{d} respectively then which is true among following relation
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The current in the resistor R shown in figure will be
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When a lossy capacitor with a dielectric of permittivity ε and conductivity σ operates at a frequency ω the loss tangent for the capacitor is given by
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1 F is theoretically equal to
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Three 3 Ω resistors are connected to form a triangle. What is the resistance between any two of the corner?
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Which of the following has positive temperature coefficient ?
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Magnetic flux has the unit of
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Pure metal generally have
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In given figure, the value of resistance R in Ω is
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Which of the following materials has highest electrical conductivity ?
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If all the elements in a particular network are linear, then the superposition theorem would hold, when the excitation is
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