Test 3: Complete Chapter – Concepts, Comparisons and Calculations

Question 1

According to Coulomb's law, what happens to the attraction of two oppositely charged objects as their distance of separation increases?

• ADecreases
• BIncreases
• CRemains unchanged
• DCannot be determined

Question 2

The device which works on the principle of electrostatics:

• Aelectric bell
• Bphotocopier
• Celectric heater
• Dtransformer

Question 3

Gravitational forces differ from electrical forces because gravitational forces are:

• Aonly attractive
• Bboth attractive and repulsive
• Conly repulsive
• Dzero

Question 4

Electrical forces are important when dealing with:

• Alarge masses and distances
• Bsmall masses and distances
• Cno distances
• Donly planets

Question 5

If both charges are negative, compared with attraction of opposite charges of the same magnitude, the force between them has:

• Athe same magnitude but opposite direction (repulsion)
• Bdouble magnitude
• Czero magnitude
• Dthe same direction