READ THE PASSAGE AND ANSWER THE QUESTIONS FROM 7 TO 10. EVERY ELECTRICAL APPLIANCE LIKE AN ELECTRIC BULB , RADIO OR FAN HAS A LABEL PLATE ON IT WHICH TELLS US THE VOLTAGE AND THE ELECTRIC POWER CONSUMED BY IT . THE POWER RATING OF AN ELECTRICAL APPLIANCE TELLS US THE RATE AT WHICH ELECTRICAL ENERGY IS CONSUMED BY THE APPLIANCE .FOR EXAMPLE , A POWER RATING OF 100WATTS ON THE BULB MEANS THAT IT WILL CONSUME ELECTRICAL ENERGY AT THE RATE OF 100 joules per second. IF WE KNOW THE POWER 'P' AND THE VOLTAGE 'V' OF AN ELECTRICAL APPLIANCE , THEN WE CAN VERY EASILY FIND OUT THE CURRENT 'I' DRAWN BY IT . THIS CAN BE DONE BY USING THE FORMULA:P=VI. 7) WHICH OF THE FOLLOWING DOES NOT REPRESENT ELECTRICAL POWER IN A CIRCUIT? *
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