Electric Forces and Fields Quiz

How many types of electric charges exist?

• Four

• One

• Two

• Three

What is the SI unit for electric charge?

• Volt

• Ohm

• Coulomb

• Ampere

Which subatomic particles are responsible for electric charge?

• Electrons and Protons

• Electrons and Neutrons

• Neutrons and Protons

• Protons and Neutrinos

What is the charge of an electron in Coulombs?

• 1.602 x 10^-19 C

• 1.602 x 10^-16 C

• 1.602 x 10^-18 C

• 1.602 x 10^-17 C

What was the significance of Millikan's oil-drop experiment?

• It determined the charge of an electron

• It measured the speed of light

• It explained the photoelectric effect

• It discovered the neutron

What is a key characteristic of conductors?

• They allow charge to move freely

• They do not allow charge to move freely

• They are always negatively charged

• They are always positively charged

How does charge by conduction occur?

• By direct contact

• By convection

• By induction

• By radiation

What happens when a conductor is charged by conduction?

• Charge becomes negative

• Charge disappears

• Charge spreads uniformly

• Charge remains localized

What is required for charging by induction?

• Direct contact

• A grounded object

• A magnetic field

• A vacuum

In charging by induction, what role does the ground play?

• It neutralizes the charge

• It acts as an infinite reservoir of electrons

• It provides a magnetic field

• It amplifies the charge