Advanced Unit 6 Electricity

Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will repel each other.
• The balloons will attract each other.
• The balloons will become positively (+) charged.
• The balloons will pop.

The accumulation of excess electric charge on an object is called

• Static electricity 
• Electric discharge
• Resistance
• Circuit 

What charge does an electron have?

• negative (-)
• positive (+)
• neutral or no charge (0)

If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.
• A negative charge.
• A neutral charge
• No charge at all

What happens when you touch a metal doorknob after rubbing your shoes on the carpet?

• The doorknob sends a burst of electric current into your body
• Millions of electrons go from your finger into the doorknob
• The doorknob sends millions of electrons into your finger
• our finger becomes negatively charged

Electric charges that DO NOT move through a current are known as

• Magnetic

• Electric

• Electromagnetism

• Static Electricity

Electric circuits provide energy for light bulbs. Which of these prevents the flow of electrons?

• a circuit that is closed

• A series circuit

• a circuit that is open

• a parallel circuit

A magnet can generate an electic current in a wire if the magnet is close enough to the wire and if the magnet is also..

• strong

• weak

• at rest

• in motion

A magnetic field will be detected near a circuit only if

• the wire is made of iron

• a current flows through the wire

• the wire is cooled first

• the battery contains acid

Your hair might be attracted to your comb as your hair and the comb become oppositely charged.

• true
• false