Lesson 1: Electric Force

In an electrical circuit, electrons move from the __________.

• Negative pole to negative pole
• Negative pole to positive pole
• Positive pole to positive pole

An electrical force which occurs as electrons are built up in an object

• Complete circuit
• Static electricity
• Power source
• Load

The tendency for a material to oppose the flow of electrons is _____.

• current

• resistance

• conductor

• voltage

Items with opposite charges _____ each other.

• attract

• repel

• move

• none of the above

Items with like charges _____ each other.

• attract

• repel

• move

• none of the above

Clothes clinging together and lightning are examples of _____.

• current electricity

• circuit electricity

• alternating electricity

• static electricity

An instrument used to measure potential difference is a(n) _____.

• Voltmeter

• Generator

• Ammeter

• Transformer

Resistance is measured in a unit called _____.

• ampere

• ohm

• volt

• coulomb

Potential difference is measured in a unit called _____.

• ampere

• ohm

• volt

• coulomb

Electric current is measured in a unit called _____.

• ampere

• ohm

• volt

• coulomb