An Ac Generator Consisting of a Coil with N Turns

question 72

Multiple Choice

An ac generator consisting of a coil with N turns rotating at angular speed ω in an external magnetic field B produces a maximum emf ε₀.If you now decrease the number of turns in the coil to N/2 and at the same time cause it to rotate twice as fast,what will be the new maximum emf if you do not change any of the other quantities?

• A)4ε₀
• B)2ε₀
• C)ε₀
• D)ε₀/2
• E)ε₀/4

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Definitions:

Purely Competitive

A market structure characterized by many buyers and sellers, all of whom are price takers offering homogenous products.

Downsloping

Characteristic of a curve or line on a graph that shows a decrease in value as it moves from left to right, commonly used in economics to describe demand curves.

Market Demand

The aggregate amount of a product or service all buyers in a market are prepared to buy at different price points.

Competitive Industry

An industry structure where many firms compete for market share, with no single firm dominating the market.