Most electrical appliances are rated in watts. Does this rating depend on how long the appliance is on? (When off, it is a zerowatt device.) Explain in terms of the definition of power.
Solution 18 CQ
Step 1 of 3</p>
Yes, the rating of the electrical appliances depends on how long the appliance is on. The Rating of an electrical appliance indicates the voltage at which the appliance is designed to work and the power it consumes.
Step 2 of 3</p>
Power is the amount of electrical energy consumed per unit time. For example an air conditioner which is marked 240 V, 1500 W means that the air conditioner will consume 1500 J of electrical energy every 1 second if it is connected to a 240 V power supply.