Power Resistance X Current Squared Graph

Very catchy repetitive audio jingle for the power current squared x resistance equation.

Power resistance x current squared graph. The amount of current in a circuit depends on the amount of voltage and the amount of resistance in the circuit to oppose current flow. For this reason the quantities of voltage and resistance are often stated as being between or across two points in a circuit. The current is equal to the electromotive force of the source divided by the total circuit resistance. Ok what is a voltage.

Well we should look this way. The resistance per cm of copper wire that thick is 3 186 x 10 5 w cm. For example a 10 gauge wire is 2 588mm in diameter. The squared current signal when greater than a squared normal current signal is integrated and compared to a current squared time value.

Repeats power equals current squared times the resistance lyrics. Plot resistance on the x axis and power on the. A mile of this wire has a resistance of 5 13 w. The current i in amps a is equal to the voltage v in volts v divided by the resistance r in ohms.

Just like voltage resistance is a quantity relative between two points. Voltage sources deliver power while resistors use power by dissipating it as heat. For this you need to assume constant current and voltage to get the plot for power vs resistance. I see a lot of answers that p v x i so v i x r p i 2 x r but why p v x i.

The resistance r in ohms ω is equal to the squared voltage v in volts v divided by the power p in watts w. If you reduce the resistance more current will flow and the resistor will get warmer because you ve increased the power. Power power p is a measure of the rate at which energy is delivered or used by a circuit element. Further to papabravo s answer you need to compute the power values for each value of resistance you have.

So for p i 2 r i some constant value and you can calculate p for different values of r. Graph of power related to changing current referring to figure 16 on page 33 note that power also varies as the square of current just as it does with voltage. My students love this and makes memorising this physics equation easy. The resistance r in ohms ω is equal to the power p in watts w divided by the squared current i in amps a.

Simplified power is how much energy is supplied absorbed or whatever in a fraction of time.