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The fundamental equation for the power of any load is the product of the voltage across the load and the current through it: P = U I.
Since voltage is the product of current and resistance (U = I R), we can substitute for voltage in the original equation:
P = U I = (IR) I = I2R
What else can I help you with?
In a home that has 120 v service heating is provided by electric resistance heat with an overall resistance of 40 ohms hom much heating power will the electric resistance heater generate?
The formula you are looking for is W = E(squared)/R, W = Voltage (squared) divided by Resistance.
What is the power in a circuit that has a current of 0.1 amps and a resistance of 18 ohms?
There is insufficient information in the question to properly answer it. You need to also know the voltage or, alternatively, the power in order to find the resistance given the current. Please restate the question.
If you know the voltage applied to a resistor and the value of the resistor how would you determine the power dissipated in the resistor.?
Power dissipation of a resistor or any load is the amount of power (in watts) that is converted to heat, light, or other form of energy. In a resistor, power dissipation is defined by Ohm's law P = I^2 * R Power dissipated equals current through the resistor squared times the resistance in ohms. Since the power is converted to heat, a resistor has a maximum dissipation rating set by the manufacturer, above which the resistor will be damaged.
Power may be expressed as what times resistance?
Power=current squared times resistance
How do you show resistance is proportional to L squared?
Okay. Resistance by ohms law is given by R = V/I But Power P = V * I Dividing R/P = 1/ I 2 Or R = P / I squared For a constant power, resistance is inversely proportional to I squared and not simply proportional to.
What is the i squared r formula used for in electrical engineering?
The i squared r formula is used in electrical engineering to calculate the power dissipated as heat in a circuit due to the resistance of the components and the current flowing through them.
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 some examples of statements that apply to resistors?
For example, you can write statements based on:* Ohm's Law: V = IR (voltage = current x resistance) * Power dissipation: P = I squared R
In a home that has 120 v service heating is provided by electric resistance heat with an overall resistance of 40 ohms hom much heating power will the electric resistance heater generate?
The formula you are looking for is W = E(squared)/R, W = Voltage (squared) divided by Resistance.
What is the heat produced by an inductor?
They are called I squared R losses. That is the formula for calculating power (P) in watts. P=I^2*R. I equals current in amps. R equals resistance in ohms. Also if the voltage (E) is known the formula is P=E^2/R. The current of electrons meets the resistance of the coil wire. That results in heat in inductor and transformer coils.
What are copper losses in a transformer?
Copper losses are purely voltage-drop losses (I squared R) caused by the resistance of the windings, as opposed to hysteresis losses and eddy current losses (so-called iron losses), which are magnetic in nature. They are called copper losses whether the winding conductors are made of copper or not, by the way.
What is the formula for pronumeral?
a squared + b squared = c squared
What formula is side squared?
Side length squared is the formula for finding the area of a square.
How do you figure electrical energy?
Energy dissipated/used by a load =(voltage across the load) x (current through it) x (time)(voltage squared) x (time) divided by (load impedance/resistance)(current squared) x (load impedance/resistance) x (time)(power) x (time)
A squared b squared formula?
x2+y2
Why is the formula for the Pythagorean theorem a bc?
a squared + b squared=c squared
What is the formula to find watts?
There are several ways to find watts; volts x amps = watts or resistance (ohms) divided by amps squared or volts squared divided by amps. You can search for Ohm's Law to find examples of these different methods and sample calculations.
