Review: Intro to Electricity

According to Coulomb's Law, what two factors affect the strength of the electric force between two charged objects?

• Temperature and pressure

• Amount of charge and distance

• Speed and direction

• Mass and volume

Tags

NGSS.HS-PS2-4

What is the unit of measurement for electric current?

• Volts

• Ohms

• Amperes

• Joules

In a parallel circuit, what happens if one component fails?

• The entire circuit stops working

• The other components continue to operate

• The voltage increases

• The current reverses direction

What is the term for the difference in electric potential energy per charge?

• Current

• Resistance

• Voltage

• Power

The electric force is stronger when the amount of __________ is greater and the distance between objects is __________.

• charge, smaller

• voltage, larger

• current, smaller

• resistance, larger

Tags

NGSS.HS-PS2-4

Materials like rubber and glass that resist the flow of electric current are called __________.

• insulators

• conductors

• semiconductors

• superconductors

Voltage is the difference in electric __________ energy per charge.

• potential

• kinetic

• thermal

• mechanical

Static electricity builds up when electrons are transferred through __________.

• friction

• conduction

• induction

• radiation

What type of electric charge do electrons carry?

• Positive

• Negative

• Neutral

• None

Which of the following is a good conductor of electricity?

• Wood

• Glass

• Plastic

• Copper