Ipc. electrical power and energy?

1) your 60-watt light bulb is plugged into a 110-volt household outlet and left on for 3 hours. the utility company charges you $0.11 per kilo watt hr. derermine the cost of using this bulb for the 3 hours

2) calculate the resistance and the current of a 7.5-watt night light bulb plugged into a US household outlet (120v)

3)calculate the resistance and the current of a 1500-watt electric hair dryer plugged into a US household outlet (120v)

4)the sticker on a compact disc player says that it draws 288 mA of a current when powered by a 9 Volt battery. what is the power (in watts) of the cd player?

Ipc. electrical power and energy?

Jaycie, this is your 2nd one

please refer to 1st question ... and post answer to 2) %26amp; 3)

only then will i tell you 1) %26amp; 4) ... rather explain you

... pretty simple and learn for self, NOT fail in your exams

%26amp; as far as the 4th, do your calculations in amps

1000 mili amps = 1 amp

EDIT:

now that your 3rd question too has been answered, 1) too should not be an issue ... please try

no harm %26gt; post whatever you could learn, right or wrong

http://wiki.4hv.org/index.php/Basic_Elec...

%26amp;

http://wiki.4hv.org/index.php/Basic_Elec...

i will sure do the proof reading part