Electricity Unit Test

What will happen if one light bulb is removed from this circuit?

• The other bulbs will go out.
• The other bulbs will get brighter.
• The other bulbs will get dimmer.
• The battery will become stronger.

Why can you get a shock if you touch a metal doorknob after walking across a wool carpet?

• You have gained electrons; the doorknob has no electrons.
• You have gained neutrons; the doorknob has fewer electrons.
• You have lost electrons; the doorknob has many electrons.
• You have gained electrons; the doorknob has many electrons.

A student designed the circuit shown in the picture. The bell is on, and both bulbs are lit. What could the student do to turn the bell off, but keep the bulbs lit?

• A. Remove Wire 1 only

• B. Remove Wire 3 and Wire 5

• C. Remove Wire 2 only

• D. Remove Wire 1 and Wire 3

Why are metals useful for making electrical wire?

• Metals do not bend.
• Metals hold much heat.
• Metals are insulators.
• Metals are conductors.

How many volts are in a circuit with a battery that has a resistance of 10 Ohms and a current of 2 Amps? 

• .5 Volts
• 5 Volts
• 20 Volts

If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor

• 2.1 Amps
• 2.4 Amps
• 1.71 Amps
• 15 Amps

What can be concluded from the experiment?

• A popsicle stick is a good conductor of electricity.

• An iron nail is a good conductor of electricity.

• A coin is a bad conductor of electricity.

• Clay is a good conductor of electricity.

Which naturally occurring phenomenon is caused by static electricity?

• hail

• earthquake

• lightning

• tornado

What is the name of an electrical circuit in which the current flows through two or more separate paths?

• single circuit

• series circuit

• parallel circuit

• double circuit

3 resistors are connected to a 9 V battery in a series circuit, the first resistor uses 6 V, the second uses 2 V. How much voltage does the third resistor use?

• 1 V

• 2 V

• 3 V

• 9 V