Ch. 20 Electricity

If an atom gains electrons, it becomes a

• positively charged ion
• negatively charged ion
• neutral atom
• neutral ion

If the two charges represented in the figure were brought near each other, they would

• attract each other
• repel each other
• cause static discharge
• have no effect on each other

Like charges __________.

• attract
• repel
• have no charge
• fall faster than normal

Electric charges that are different _______ each other.

• Attract
• Repel

The attraction or repulsion between electric charges

• Electric field
• Electric force
• static electricity
• static discharge

Which below is a good example of a conductor?

• copper wire
• a wooden block
• a plastic tube
• a glass vase

_______ explains why you feel a shock when you touch a doorknob after you have walked across carpet.

• Static Electricity
• Electric Forces
• Resistance
• Ohm's Law

If an object has a net charge of +2e this means it has

• lost 2 electrons
• gained 2 electrons
• lost 2 protons
• gained 2 protons

The electric field lines for a positive charge is always directed away from the charge. True or False?

• True

• False

At which point is the electric field the strongest

• A
• B
• C
• D