ce phy

cmh_2002

two heaters each marked'200w,1kw' are connected in series to a 200v supply.Find the total power generated by the two heaters.

[ Last edited by cmh_2002 on 20-3-2005 at 07:58 PM ]

beckham312oo

Originally posted by cmh_2002 at 2005-3-20 07:54 PM:
two heaters each marked'200w,1kw' are connected in series to a 200v supply.Find the total power generated by the two heaters.

[ Last edited by cmh_2002 on 20-3-2005 at 07:58 PM ]

咁trivial?

1.R=V^2/P=200^2/1000
2.actual P=100^2/R
3.Total P=2P