Max # of 60W Light Bulbs in a 30A 220V Circuit

[tDexx]

Homework Statement

A 220 volt circuit is fused for 30 amps. How many 60 watt incandescent soft whote light bulbs with tungsten filament burning at 3,0000 celsius can be used at the same time in the circuit without tripping the fuse?

Homework Equations

N/A

The Attempt at a Solution

(w/220)=30
220=30 amps(w)
220/30 amps=7.33 watts

 

[PeterO]

Homework Statement

A 220 volt circuit is fused for 30 amps. How many 60 watt incandescent soft whote light bulbs with tungsten filament burning at 3,0000 celsius can be used at the same time in the circuit without tripping the fuse?

Homework Equations

N/A

The Attempt at a Solution

(w/220)=30
220=30 amps(w)
220/30 amps=7.33 watts

At least have a look at this:

http://en.wikipedia.org/wiki/Power_(physics)

Go to the electric power section for some useful formulae. Those same formulae will be in your textbook.

 

[tDexx]

Unfortunately i don't have a textbook to go with my homework...

 

[PeterO]

Homework Statement

A 220 volt circuit is fused for 30 amps. How many 60 watt incandescent soft whote light bulbs with tungsten filament burning at 3,0000 celsius can be used at the same time in the circuit without tripping the fuse?

Homework Equations

N/A
In one of your other posts you listed P = IV. That would be really useful here.

The Attempt at a Solution

(w/220)=30
220=30 amps(w)
220/30 amps=7.33 watts

See above.