The Operation of an Electric Motor Depends on Which of the Following

question 70

Multiple Choice

The operation of an electric motor depends on which of the following effects?

• A) the force acting on a current-carrying wire in a magnetic field
• B) the Doppler effect
• C) current from the motion of a wire in a magnetic field
• D) the photoelectric effect

---

Definitions:

Import Protection

Measures by a government to restrict foreign imports to protect domestic industries.

Import Quotas

Restrictions set by a country on the amount or volume of goods that can be imported into the country over a set period of time.

Consumer Surplus

The discrepancy between what consumers are prepared to spend on a good or service and what they end up paying.

Total Surplus

The sum of consumer surplus and producer surplus in a market, representing the total benefits to society from trading goods and services.