What are megavars?


What are megavars?

Alternating Current:

The alternating current is an electric current that changes its direction and magnitude over time. It is different from the direct current which only goes in one direction. Megavars are relevant to alternating currents.

Answer and Explanation: 1

A megavar is one million volt-amperes. A volt-ampere measures apparent electric power in an alternating current. The numerical value for apparent power is the root mean square voltage multiplied by the root mean square current. Root mean square means: the square root of the mean of the squares.

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Alternating Current vs. Direct Current: Lesson for Kids


Chapter 2 / Lesson 7

Electricity is a vital part of modern life, but electricity comes in different forms. Explore the differences between alternating current and direct current and how they affect the hertz and voltage of electric currents.

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