0
What else can I help you with?
What is the equation to calculate power when circuit current and resistance are known what is the equation?
The power ( P ) in an electrical circuit can be calculated using Ohm's Law, which relates voltage ( V ), current ( I ), and resistance ( R ). The equation is given by ( P = I^2 R ), where ( P ) is the power in watts, ( I ) is the current in amperes, and ( R ) is the resistance in ohms. This formula shows that power is directly proportional to the square of the current multiplied by the resistance.
Formula used to find the maximum current that can be carried by a resistor if resistance and wattage rating is known?
Manipulate the following equation, to make I the subject: P = I2R, where P = power, I =current, and R = resistance.
How is ohm's releted the power?
Ohm's Law relates voltage (V), current (I), and resistance (R) in an electrical circuit, expressed as V = IR. Power (P) in an electrical circuit can be calculated using the formula P = VI, which can be further expressed in terms of resistance as P = I²R or P = V²/R. This shows that power is directly proportional to the square of the current or voltage, while also being influenced by resistance. Therefore, Ohm's Law provides a foundational understanding of how voltage, current, and resistance interact to determine electrical power.
Why is the formula squared in power dissipation of electrical resistance?
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
Power may be expressed as what times resistance?
Power=current squared times resistance
What is the equation to calculate power when circuit current and resistance are known what is the equation?
The power ( P ) in an electrical circuit can be calculated using Ohm's Law, which relates voltage ( V ), current ( I ), and resistance ( R ). The equation is given by ( P = I^2 R ), where ( P ) is the power in watts, ( I ) is the current in amperes, and ( R ) is the resistance in ohms. This formula shows that power is directly proportional to the square of the current multiplied by the resistance.
What is the relationship between power dissipation (P), current (i), and resistance (r) in an electrical circuit, as represented by the equation Pi2r?
The relationship between power dissipation (P), current (i), and resistance (r) in an electrical circuit is represented by the equation Pi2r. This equation shows that power dissipation is directly proportional to the square of the current and the resistance in the circuit.
What is the relationship between power dissipation (P), current (i), and resistance (r) in an electrical circuit, as represented by the equation P i2r?
The relationship between power dissipation (P), current (i), and resistance (r) in an electrical circuit is represented by the equation P i2r. This equation shows that power dissipation is directly proportional to the square of the current and the resistance in the circuit.
What mathematical equation is used for a circuit to find I when you know P and R?
To find the current (I) in a circuit when you know the power (P) and resistance (R), you can use the equation derived from Ohm's Law and the power formula: ( P = I^2 R ). Rearranging this gives ( I = \sqrt{\frac{P}{R}} ). This equation allows you to calculate the current based on the known power and resistance values.
The power in an electrical circuit is given by the equation P I2R where I is the current flowing through the circuit and R is the resistance of the circuit. What is the power in a circuit that has a c?
The power in a circuit is determined by multiplying the square of the current flowing through the circuit by the resistance of the circuit. Without specific values for current and resistance provided, the precise power cannot be calculated.
Formula used to find the maximum current that can be carried by a resistor if resistance and wattage rating is known?
Manipulate the following equation, to make I the subject: P = I2R, where P = power, I =current, and R = resistance.
What is an equation for power?
Power = (energy used)/(time to use it)Power dissipated by an electrical circuit =(voltage across the circuit) x (current through the circuit)or(resistance of the circuit) x (square of the current through the circuit)or(square of the voltage across the circuit)/(resistance of the circuit)
What are the relationships between current power and resistance?
Power is inversely proportional to resistance. Ohm's law: Current is voltage divided by resistance Power law: Power is voltage times current, therefore power is voltage squared divided by resistance.
What is the power dissipated by an 8.2k ohm resistor if a current of 0.005 amps is passing through the resistor?
Take your pick:P = V x I (Power = Voltage x Current)or:P = V2 / R (Power = Voltage2 / Resistance)or:P = I2 *R (Power = Current2 x Resistance)(the last two equations come from combining the ohms law equation R=V/I with the power equation P=VxI)In the question above you have resistance and current therefore:P = I2 *R = 0.0052 x 8.2k = 0.0052 x 8200 = 0.205W = 205mW
How is ohm's releted the power?
Ohm's Law relates voltage (V), current (I), and resistance (R) in an electrical circuit, expressed as V = IR. Power (P) in an electrical circuit can be calculated using the formula P = VI, which can be further expressed in terms of resistance as P = I²R or P = V²/R. This shows that power is directly proportional to the square of the current or voltage, while also being influenced by resistance. Therefore, Ohm's Law provides a foundational understanding of how voltage, current, and resistance interact to determine electrical power.
What is the equation that relates the intensity of light to the power of the light source and the distance from the source?
The equation that relates the intensity of light to the power of the light source and the distance from the source is known as the inverse square law. It is expressed as: Intensity Power / (4 distance2)
Tripling the current in a circuit with constant resistance has the effect of changing the power by what factor?
Increasing the current in a circuit by a factor of 3 will increase the power by a factor of 9 (3^2), assuming the resistance remains constant. Power is directly proportional to the square of the current in a circuit with constant resistance, according to the equation P = I^2 * R.
