EXAMIANS
A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will
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Insulators have _______ temperature co-efficient of resistance.
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A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is
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Sparking occurs when a load is switched off because the circuit has high
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Resistance of a tungsten lamp _____ as applied voltage increases.
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Conductivity is the reciprocal of
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In which of the following substances the resistance decreases with increase in temperature?
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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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When one lag of parallel circuit is opened out the total current will
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Out of the following which is not a poor conductor?
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