how do you calculate current??

Question

anonymous · Answer

$$I =\frac{V}{R}$$

anonymous · Answer

what is meant by I, V and R?

anonymous · Answer

I - current through wire , V - voltage across element (resistor, capacitor, Inductor) , R - Resistance of element

anonymous · Answer

thank you very much!

anonymous · Answer

oh one more thing how do you find resistance?

anonymous · Answer

If this is a new problem you can rearrange the top equation to solve for R

anonymous · Answer

Current = voltage over resistance  but it also equals coulombs/second

anonymous · Answer

i have to find the current, The volt is 120V and the wattage of an electric appliance is 1000 W........how do i go about doing the calculations?

anonymous · Answer

$$P = IV = I^2 R = \frac{ V^2 }{ R }$$
Where P is the electric power (watts), I is the current (Amperes), R is the resistance (Ohms) and V is the voltage (Volts).

anonymous · Answer

i don't have the resistance though

anonymous · Answer

you'll take the 120volts  and the 1000watts (power) and use equation:
power = current * volts
to solve for current. ^_^