How Do You Calculate Current in Lamps with Different Wattages?

[Elliott.98]

A 60W lamp and a 120W lamp each have a potential difference of 120V across their terminals.

a) What is the current through each lamp?

I think you use the formula I = P/V and so:

Lamp #1 = I = 60/120 and Lamp #2 = I = 120/120

But I don't know if that is right?

Thank you so much for the help!

 

[Hesch]

But I don't know if that is right?

It's absolutely correct.

( Generally: Remember units. If they don't match, you have made an error ).

 

[Elliott.98]

It's absolutely correct.

( Generally: Remember units. If they don't match, you have made an error ).

Ok, thank you!