Power in Circuits Video Lessons

Concept

# Problem: In this problem you will derive two different formulas for the power delivered to a resistor.What is the power P supplied to a resistor whose resistance is R when it is known that it has a voltage ?V across it?

###### FREE Expert Solution

Power supplied to a resistor:

From Ohm's law, the current through a resistor is:

$\overline{){\mathbf{i}}{\mathbf{=}}\frac{\mathbf{V}}{\mathbf{R}}}$

The power supplied to a resistor is expressed as:

P = Vi

###### Problem Details

In this problem you will derive two different formulas for the power delivered to a resistor.

What is the power P supplied to a resistor whose resistance is R when it is known that it has a voltage ?V across it?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Power in Circuits concept. You can view video lessons to learn Power in Circuits. Or if you need more Power in Circuits practice, you can also practice Power in Circuits practice problems.