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How does the resistance change if the power decreases from 2500 watts to 500 watts?
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Formula for watts and amps?
power in watts = voltage in volts x current in amps. or power in watts = current in amps x (resistance in ohms) squared i think what you meant was power in watts =(current in amps)squared x resistance in ohms
What are watts amps and ohms?
ohms is a measure of resistance(R) in a circuit. Watts is a measure of the power(P), in this case lets assume it is the power used by the resistive element (lamp, heater etc). Power(watts)=Current(Amps)x Current(amps) x Resistance(ohms) or Resistance (ohms)=Power(W)/(current x current)
What is 15amp equivilent to in watts?
You need to know the voltage and Power Factor in the equation Watts = Amps x Volts x Power Factor. Now Power Factor is equal to one for a resistance load and decreases for loads like motors. So for example if you are talking about a home portable electric heater that draws 15 Amps at 120 Volts your Watts would be 15 x 120 = 1800 watts or 1.8 kilowatts.
How many watts in 12 amps at 220 volts?
Watts = volts x amps x power factor Power Factor is 1 for resistive loads and decreases for other loads like motors. Maximum watts would be 12 x 220
What is watts and what is watts measured in?
Watts are used to measure electrical POWER. You can use the mnemonic CAROPWEV to remember this CA=CURRENT measured in AMPERES RO=RESISTANCE measured in OHMS PW=POWER in WATTS EV=ENERGY in VOLTS you can get power by multiplying the current by the voltage.
Formula for watts and amps?
power in watts = voltage in volts x current in amps. or power in watts = current in amps x (resistance in ohms) squared i think what you meant was power in watts =(current in amps)squared x resistance in ohms
What are watts amps and ohms?
ohms is a measure of resistance(R) in a circuit. Watts is a measure of the power(P), in this case lets assume it is the power used by the resistive element (lamp, heater etc). Power(watts)=Current(Amps)x Current(amps) x Resistance(ohms) or Resistance (ohms)=Power(W)/(current x current)
What is 15amp equivilent to in watts?
You need to know the voltage and Power Factor in the equation Watts = Amps x Volts x Power Factor. Now Power Factor is equal to one for a resistance load and decreases for loads like motors. So for example if you are talking about a home portable electric heater that draws 15 Amps at 120 Volts your Watts would be 15 x 120 = 1800 watts or 1.8 kilowatts.
What are the losses in resistors?
The power lost in a resistor is(the current through the resistor) times (the resistance) watts. That's the same thing as(the voltage across the resistor)/(the resistance)watts.
What is the current in a circuit that has a resistance of 30 ohms and a power of 2 watts?
Use the formula: P=IR (power = current x resistance).
How do you calculate the amperage given the watts and voltage?
Amps = Watts / (Volts x Power Factor). The Power Factor is one for resistive loads and decreases for inductive loads like motors.
How are volts ohms and watts affected by each other?
For a fixed resistance (ohms) current increases as voltage increases. Since Watts equals Volts x Amps x Power Factor then Watts would increase as voltage increases. The resistance would usually be fixed, but if you had a variable load resistance as the resistance decreased and the voltage remained constant, the current would increase and watts would therefore increase. Watts = Volts x Amps x Power Factor Volts = Amps x Ohms Power Factor is 1 for a resistive load.
How do you calculate power loss from a resistor?
The power dissipated across a resistor, or any device for that matter, is watts, or voltage times current. If you don't know one of voltage or current, you can calculate it from Ohm's law: voltage equals resistance times current. So; if you know voltage and current, power is voltage times current; if you know voltage and resistance, watts is voltage squared divided by resistance; and if you know current and resistance, watts is current squared times resistance.
What is resistance power?
All resistances will emit heat energy when a current flows. The heat production rate (or power) can be found by any of these formulas: Power = Current * Voltage Power = Current2 * Resistance Power = Voltage2 / Resistance. Power is given in Watts when Current is in Amps, Voltage in Volts, and Resistance in Ohms.
How many watts is 10kva?
Watts is equal to volts x current x Power Factor. The maximum value of Power Factor is 1 for a resistive load. For motors and other inductive devices the Power Factor is less than 1. Your maximum wattage is 10,000 watts and decreases as Power Factor decreases.
What is the formulae for the relationship between amps volts and resistance?
The current [I] (measured in Amps) is equal to the power [P] (measured in Watts) divided by the voltage [V] (in Volts). I = P/V Amps = Watts / Volts Therefore, P*V=I Watts * Volts = Amps
What is the power of a parallel circuit with a resistance of 1000 ohms and a current of 0.03 amps?
.9 watts.
