Static Electricity study

In a neutral atom, the number of electrons is equal to the number of _______.

• Neutrons

• Protons

• Orbits

• Subatomic Particles

If two charges repel each other, the two charges must be?

• Positive & Positive

• Positive & Neutral

• Negative & Negative

• Positive and Negative

An object becomes charged when the atoms in the object gain or lose?

• Electrons

• Protons

• Neutrons

• All of the above

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.

An object becomes negatively charged by

• losing protons

• gaining electrons

• losing electrons

• gaining protons

An object becomes positively charged by

• losing protons

• gaining electrons

• losing electrons

• gaining protons

Force between two bodies having charges 5.0 x 10² μC and 1.0 x 10² μC separated by distance of 0.50 m in air is

• 1800 N
• 1.0 x 10³ N
• 2200 N
• 3.0 x 10² N

An object contains 60 more protons than electrons. What is the total charge of the object?

( charge of 1 electron = 1.6 x10^-19 C)

• + 9.6x10^-18 C

• - 9.6x10^-18 C

• + 6.0x10^-19 C

• - 6.0x10^-19 C

When distance increases, electrostatic force ____________; we call this relationship ____________ proportional

• decreases;directly
• decreases;inversely
• increases;inversely
• increases;directly

The Coulomb is the unit for:

• Charge

• Force

• Distance

• Mass