Posted by Anonymous on Tuesday, May 31, 2011 at 3:36pm.
A 2400 watt appliance operating at 10 amps has most nearly_____ ohms resistance.
A) 24
B) 0.5
C) 5
D) 240
E) need more info
I tried to find a formula to use, but i don't know which one to use. Thank you.

PHY (NEED ANSWER SOON PLS)  MathMate, Tuesday, May 31, 2011 at 4:01pm
Power = Vi = V²/r = i²r
In the given problem, you have been given the current i=10 amps, Power = 2400 watts.
The resistance can be calculated from one of the above formulas.

PHY (NEED ANSWER SOON PLS)  Anonymous, Tuesday, May 31, 2011 at 4:43pm
so can i use P=i(^2)r
r=P/i(^2)=24
so the answer is A, correct?

PHY (NEED ANSWER SOON PLS)  MathMate, Tuesday, May 31, 2011 at 5:05pm
Right!
Answer This Question
Related Questions
 math  a. The power of an electric appliance is given by the formula P=I^2R, ...
 Math  Amperes (abbreviated amp) measure the strength of electric current. An ...
 Physics  The typical resistance of the tungsten filament of a 60 watt ...
 physics  Calculate the resistance of a 900 watt toaster operating at 120 volts...
 PHY [noncalc]  Resistors R1= 10ohms, R2= 40 ohms and R3= 70 ohms are connected...
 science  according to ohms law what is the resistance of a lightbulb if that ...
 physics  If the filliament resistance in an automobile headlamp is 3 ohms, how ...
 Physics  Calculate the resistance of a 900 watt toaster operating at 120 volts...
 math: and i really need help  You plug a microwave into a 20ampere (amp) ...
 Physics  Would someone please check my answers? thanks During a lie detector ...
More Related Questions