- #1

chessie273

- 1

- 0

Hi, I'm new to the forum so i don't really quite know what I'm doing yet!

anyway, i know this question is REALLY basic but physics is not my forte and I'm confused...

"John has just bought a new iron and sees this plate on the handle -

230V

1840W

50Hz"

John irons a shirt for 10s

energy transformed = power x time

so if I'm correct:

time = 10s

power= 1840W

energy transformed = 18400J

the final question "John can tell from the plate that the iron can operate using mains supply. How can he tell this?"

and i have absolutely no idea!

help would be greatly appreciated - i really need to understand this, its from a gcse mock paper and my exam is in a couple of weeks!

anyway, i know this question is REALLY basic but physics is not my forte and I'm confused...

"John has just bought a new iron and sees this plate on the handle -

230V

1840W

50Hz"

John irons a shirt for 10s

energy transformed = power x time

so if I'm correct:

time = 10s

power= 1840W

energy transformed = 18400J

the final question "John can tell from the plate that the iron can operate using mains supply. How can he tell this?"

and i have absolutely no idea!

help would be greatly appreciated - i really need to understand this, its from a gcse mock paper and my exam is in a couple of weeks!

Last edited: