![When calculating power , how will we know if we have to put Joules ( J) or joules per second (J/s) in the answer? : r/igcse When calculating power , how will we know if we have to put Joules ( J) or joules per second (J/s) in the answer? : r/igcse](https://preview.redd.it/when-calculating-power-how-will-we-know-if-we-have-to-put-v0-4237roacyh6a1.jpg?auto=webp&s=e23490846e6d1e3548bbe6dadc52f649da75b573)
When calculating power , how will we know if we have to put Joules ( J) or joules per second (J/s) in the answer? : r/igcse
![An electric heater supplies heat to a system at a rate of 100W. If system performs work at a rate of 75 joules per second. At what rate is the internal energy An electric heater supplies heat to a system at a rate of 100W. If system performs work at a rate of 75 joules per second. At what rate is the internal energy](https://d10lpgp6xz60nq.cloudfront.net/web-thumb/516976776_web.png)
An electric heater supplies heat to a system at a rate of 100W. If system performs work at a rate of 75 joules per second. At what rate is the internal energy
![SOLVED: Electrical energy is usually measured in kiloWatt*hours, kWh. A Watt is 1 joule per second. A kiloWatt is 1000 joules per second. An hour has 3600 seconds. Therefore 1 kWh = SOLVED: Electrical energy is usually measured in kiloWatt*hours, kWh. A Watt is 1 joule per second. A kiloWatt is 1000 joules per second. An hour has 3600 seconds. Therefore 1 kWh =](https://cdn.numerade.com/ask_previews/9cffe303-ac21-4d82-a46f-5cb70d86ed2d_large.jpg)
SOLVED: Electrical energy is usually measured in kiloWatt*hours, kWh. A Watt is 1 joule per second. A kiloWatt is 1000 joules per second. An hour has 3600 seconds. Therefore 1 kWh =
![Power is defined as the rate of transferring energy. The word rate means per second. Another way of saying this is : 'Power is the energy transferred per. - ppt download Power is defined as the rate of transferring energy. The word rate means per second. Another way of saying this is : 'Power is the energy transferred per. - ppt download](https://images.slideplayer.com/30/9546004/slides/slide_2.jpg)