Chapter 19 Test: Electricity

Electrons that move from one object to another and then remain at rest produce

• current elctricity

• series electricity

• static electricity

• parallel electricity

Silver, copper, and mercury are examples of good electric

• conductors.

• inductors.

• insulators.

• radiators.

A negatively charged rubber rod can pick up small, neutrally charged pieces of paper without touching them by a process called

• conduction.

• induction.

• reduction.

• insulation.

Potential difference is measured in a unit called a(an)

• ampere.

• ohm.

• watt.

• volt.

The opposition to the flow of electricity is called

• amperage.

• resistance.

• electric current.

• voltage.

An automobile battery is an example of a

• wet cell.

• dry cell.

• thermocouple.

• fuse.

If the different parts of an electric circuit are found on separate branches of the circuit, the circuit is called a(an)

• open circuit.

• transistor circuit.

• parallel circuit.

• series circuit.

According to Ohm's law, if the resistance of a circuit is 25 ohms and the voltage is 5 volts, then the current flow in the circuit will equal

• 0.2 amperes.

• 5 amperes.

• 30 amperes.

• 125 amperes.

As the length of a wire increases, the resistance

• increases.

• decreases.

• remains the same.

• disappears.

If an object contains more electrons than protons, it is said to be

• positively charged.

• neutral.

• negatively charged.

• energized.