If two equal resistors of 20 Ohms each are connected in parallel, the total resistance in Ohms
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An earth wire is needed for an electrical equipment with
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A switch is normally connected across
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The National Grid uses thick copper wires in order to
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In the event of a drop in voltage, a bulb could go
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If two resistors are connected in series, the total resistance is 25 Ohms. If they are connected in parallel, it goes down to 6 Ohms. The possible values of the resistances in Ohms are
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The ratings of a bulb is 60 W, 240 V. Its resistance in Ohms is
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Three cells, EMF 6 V each, are connected in parallel. The total EMF is
