Let's practice some problems to better understand the concept of electric power and its relation with voltage and current in a circuit.

In this video David derives the formula to find the power used by a resistor. Created by David SantoPietro.

We can't imagine our lives without electricity. But what exactly is electricity? How does electricity light up our houses? What does a battery do? What is the cost of electricity? We will answer …

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Let's learn how to calculate electric power delivered & consumed in any circuit.

In physics, power is defined as the rate at which work is done. It measures how quickly energy is being transferred or converted. Learn how to calculate both average and instantaneous power.

Learn what power means and how we use it to describe the rate of energy transfer.

We can't imagine our lives without electricity. But what exactly is electricity? How does electricity light up our houses? What does a battery do? What is the cost of electricity? We will answer …

We will explore what causes things to heat up when electricity runs through them. We will also learn how to calculate the amount of heat produced per second due to electricity.

We can't imagine our lives without electricity. But what exactly is electricity? How does electricity light up our houses? What does a battery do? What is the cost of electricity? We will answer …