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Asked by Pinaki Last Modified
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Volt,V is a measure of electrical potential difference. Ground or earth is defined as zero potential. A live domestic electrical wiring is at 220 V. A common batter is at a potential difference of 1.5 V from the earth. Current flows from higher potential to lower potential. This is just like water flowing from a higher level to a lower level.
Watt, W is the measure of Power or the amount of work done in Joules per second by the current. It is the product of Voltage and Current, I. W = VI. It is the rate of consumption of electric energy by a circuit where the potential difference is 1 Volt and the current flowing is 1 Amp.
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