Introduction to Electricity

Introduction to Electricity

Shocking, isn't it...? ;)

Multiple Choice

Static electricity is an electric charge caused by friction that can build up on a material or surface. One example of static electricity is:

• solar power
• magnetism
• lightning

Multiple Choice

What process is the method by which a neutral object obtains an electrical charge from a distance?

• convection

• conduction

• radiation

• induction

Multiple Choice

Flowing electrons are called ____________.

• Current

• Amperes

• Voltage

• Resistance

Multiple Choice

Electricity is

• The movement of electrons

• The movement of protons

• The movement of neutrons

• A form of energy that travels in straight lines

Multiple Choice

What are two factors that affect the strength of the electric field?

• Net charge

• Wind speed

• Distance from the charge

• Both A and C are correct

Multiple Choice

The Law that states that like charges repel and opposite charges attract

• Thermocouple

• Photocell

• Law of Electric Charges

• Electric force

Multiple Choice

The direction of the conventional electric current is in the

• same direction of flow of electrons

• opposite direction of flow of electrons

Multiple Choice

Current is a measure of the _________ in a circuit

• energy carried by the electrons

• rate of electron flow

• both

• neither

Multiple Choice

What 'flows' in a wire?

• Protons
• Neutrons
• Atoms
• Electrons

Multiple Choice

The continuous flow of electrons is ______

• Current

• Static electricity

• Voltage

• Resistance

Multiple Choice

The total resistance in this circuit is equal to

• 120 ohms

• 15 ohms

• 60 ohms

• 30 ohms

Multiple Choice

Voltage is measured in

• Ohms

• Amps

• Volts

• Resistance

Multiple Choice

What does this symbol stand for?

• Omega

• Theta

• Volts

• Ohms

Multiple Choice

The formula for resistance is:

• R = V / I

• R = V I

• R = V - I

• R = I / V

Multiple Choice

Series circuits have ________ resistance. Parallel circuits have _______ resistance.

• Negative, positive.

• High; low.

• Low; high.

• Positive, negative.

Multiple Choice

A conductor has _____ resistance. An insulator has ______ resistance.

• Low; high.

• Negative; positive.

• Positive, negative.

• High, low.

Multiple Choice

Voltage is

• Also called 'potential difference'

• The difference in energy of the electrons leaving and returning a battery

• Measured using a voltmeter

• All of the above