A Candle May Be Considered a More Efficient Producer of Light

question 55

Multiple Choice

A candle may be considered a more efficient producer of light than a flashlight because it

• A)converts chemical energy directly into light.
• B)produces more heat than a flashlight.
• C)does not have a battery to recharge or replace.
• D)may be used in remote locations far from electrical networks or power lines.

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Definitions:

Arbitraging

The practice of buying and selling the same asset in different markets to take advantage of differing prices for the same asset.

Foreign Goods

Products or services that are produced outside one's own country and imported for domestic consumption.

Purchasing-power Parity

An economic theory that compares different countries' currencies through a "basket of goods" approach to determine the relative value of the currencies.

Currency

The system of money in general use in a particular country, used for buying and selling goods and services.