With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals
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Electrical Engineering · all questionsCurrent Electricity
Current Electricity
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The insulation on a current carrying conductor is provided
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Out of the following which is not a poor conductor?
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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 the heater will
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Which of the following statement is true both for a series and a parallel D.C. circuit?
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Voltage dependent resistors are usually made from
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The resistance of a copper wire 200 m long is 21 If its thickness (diameter) is 0.44 mm, its specific resistance is around
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The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is
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In a circuit a 33 Ohm resistor carries a current of 2 A. The voltage across the resistor is
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If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes
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In the case of direct current
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In a lamp load when more than one lamp are switched on the total resistance of the load
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A 3 ohm resistor having 2 A current will dissipate the power of
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Electric pressure is also called
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The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other?
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The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is
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Voltage dependent resistors are used
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With rise in temperature the resistance of pure metals
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Which of the following statement is correct?
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Q100
Open questionTwo lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct?
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