10th Grade Electrostatics Quiz

What happens when a negatively charged rod touches a neutral metal sphere?

• The sphere remains neutral
• Electrons transfer from the rod to the sphere
• Protons transfer from the sphere to the rod
• The rod loses its charge completely

In charging by contact, what characteristic of charge transfer is most important?

• Charge is completely destroyed
• Charge is shared between objects
• Only positive charges transfer
• Charge is always conserved at 100%

During charge induction, what happens to electrons in a neutral object when a charged rod is brought nearby?

• Electrons remain completely stationary
• Electrons are completely removed
• Electrons are redistributed within the object
• Electrons multiply spontaneously

When a positively charged rod is brought near a neutral aluminum foil during induction, which side of the foil becomes negatively charged?

• The side farthest from the rod
• The entire foil remains neutral
• The side closest to the rod
• Random sections of the foil

What fundamental principle governs charge transfer during contact?

• Charge can be created or destroyed
• Charge is always conserved
• Only positive charges can transfer
• Electrons always flow from negative to positive

In charge induction, what creates the polarization of a neutral object?

• Random electron movement
• Direct physical contact
• Electrostatic repulsion of electrons
• Magnetic field interference

What distinguishes charging by contact from charging by induction?

• Contact involves physical touching, induction does not
• Contact always creates more charge
• Induction only works with metals
• Contact never transfers charge

When a negatively charged rod approaches a neutral object during induction, what happens to the object's electron distribution?

• Electrons remain uniformly distributed
• Electrons are completely removed
• Electrons are pushed away from the rod's side
• Electrons are attracted to the rod

What determines the direction of charge movement during induction?

• Random chance
• Object's temperature
• Electrostatic attraction and repulsion
• Magnetic fields

In charge transfer by contact, if a negatively charged object touches a neutral object, what type of charge will both objects have afterward?

• Positive charge
• Neutral charge
• Negative charge
• Alternating charge