I am taking a test in a few days and would like to know the formulas for determining Voltage, Ohms,Wattage and Amperage. I need these to figure out things like finding the resistance in a circuit and how much voltage there is, etc. Any help would be appreciated
2007-09-30 12:31:54 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
V=IR, R=V/I, I=V/R
Watts=current x voltage
2007-09-30 12:38:42 · answer #1 · answered by science teacher 7 · 1⤊ 1⤋
Formula To Find Voltage
2016-11-07 08:36:23 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Voltage = Current * Resistance
Wattage or Power = Current^2 * Resistance
2007-09-30 12:36:36 · answer #3 · answered by chitrakg 2 · 2⤊ 0⤋
finding hard time in your basic dc analysis?ptolemy862000 just gave the complete info you need. maybe you're finding hard time solving dc circuits in series, parallel and the combination of both. you should also study this. in solving the voltages for two resistors in series, use the total current x the resistance of each resistor. for parallel resistors the current is, total voltage / resistance of each resistor. for the combination, that depends on the orientation of the circuit. i'll advise you to further study voltage and current dividers.
2007-09-30 19:14:18 · answer #4 · answered by Anonymous · 0⤊ 0⤋
For simple DC stuff;
V=voltage (volts)
I=current (amps)
W= Power (W)
R= Resistance.
V=IR
so if you had a resistor of 100ohms and put 10V across it you would get 0.1amps (100 mA).
W=VI
and the power would be... guess what.. 1W
You can combine the 2 equations as you need.
Once you get into AC your into a world of brain-pain which could not sensible be covered on yahoo answers without specific questions.
2007-09-30 12:43:20 · answer #5 · answered by interested_party 4 · 1⤊ 0⤋
E=IR - volts equal current in amps times resistance in ohms.
Divide voltage by current to get resistance,
or by resistance to get current.
P=IE - power in watts equals current in amps times volts.
Divide power by current to get voltage,
or by voltage to get current.
2007-09-30 12:40:56 · answer #6 · answered by Robert S 7 · 2⤊ 0⤋
Volts (V) = Current x Resistance (V = I x R)
('I' is a capital ' i ').
Current (Amps ( or I ) = Volts ÷ Resistance (I = V/R)
Resistance (Ohms (Ω) = Volts ÷ Current (R = V/I)
Watts = Volts x Amps.
2007-09-30 17:28:38 · answer #7 · answered by Norrie 7 · 0⤊ 0⤋
This information that you have asked for, was it in the text for the class that this test is going to be taken in? If so, then you should already know it. If not, and you are "cramming" now, you may very well get mixed up if the terms are not second nature to you. May I advise more study time, and less "play" time.
2007-09-30 13:07:41 · answer #8 · answered by Anonymous · 0⤊ 5⤋
I can give you a sourse web site that has all of these formulas
http://www.assocelec.com/tools.htm
2007-09-30 15:04:54 · answer #9 · answered by RedMtMan 2 · 0⤊ 0⤋
V=IR
I=V/R
R=V/I
P=VI
P=I^2R
P=V^2/R
2007-09-30 13:01:18 · answer #10 · answered by ptolemy862000 4 · 1⤊ 0⤋