Chapter 6 Practice Test

What type of charge transfer occurs when two objects are rubbed together?

• conduction
• induction
• friction
• polarization

The transfer of electrons from a cloud to the ground during a lightning strike is an example of

• an electric circuit
• static discharge
• voltage
• an electric field

In an electric field diagram, the arrows

• always point to the negative
• always point to the positive
• are all in one line
• are never connected

What happens to the electrons in a metal object when a negatively charged object goes near it?

• The electrons are attracted to the metal object
• Th electrons leave the metal object
• The electrons move away from the negatively charged object
• The electrons turn into positive charges to attract the object

Which of these objects is an insulator?

• copper wire
• aluminum foil
• silver ring
• rubber gloves

Which of these objects is a conductor?

• glass bowl
• steel fork
• plastic wire cover
• rubber gloves

Power plants use metal wires to connect power to your house. How is the resistance of the wires likely to change during hot summers and cold winters?

• During the summer, the resistance increases
• During the winter, the resistance increases
• During the summer, the resistance decreases
• There won't be a change in resistance

Maribel built an electric circuit. When she added a second bulb, the first bulb became dimmer. What type of circuit did she build?

• Ohm's
• parallel
• series
• static

What is the equation for finding resistance, according to Ohm?

• voltage x current
• current x voltage
• voltage / current
• current / voltage

Will any of the bulbs light when you open the switch? Why or why not?

• Yes, because it is a parallel circuit, and in a parallel circuit it doesn't matter where the switch is.
• Yes, because it is a series circuit, and in a series circuit it doesn't matter where the switch is.
• No, because the switch will break the circuit since it is between the battery and all of the bulbs.
• No, because there is no energy source for this circuit