Physics- Charging

It is not a way to charging an object.

• Contact or Friction

• Induction

• Grounding

• Wireless

Charging by contact consist in

• One object a net electric charge by placing it in contact with another object that is already neutral

• One object a net electric charge by placing it in contact with another object that is already conductor

• One object a net electric charge by placing it in contact with another object that is already charged

• One object a net electric charge by placing it in contact with another object that is already isolator

Charging by friction consist in

• charge two non-conducting bodies by contact them with each other vigorously

• charge two conducting bodies by rubbing them with each other vigorously

• charge two non-conducting bodies by rubbing them with each other vigorously

• charge two non-conducting bodies by induction them with each other vigorously

Charging by induction consist in

• the charged particle is held near an untouching and heated material that is grounded on a neutrally charged material.

• that charges an object without actually touching the object to any other charged object

• that charges an object touching the object to any other charged object.

• the charged particle is held near an semi-conductive material that is grounded on a neutrally charged material.

Charging by grounding consist in

• the movement of protons between the charged object and the ground

• the movement of electrons between the charged object and the sky

• the movement of electrons between the charged object and the wet ground

• the movement of electrons between the charged object and the ground

A neutral metal sphere is touched by a negatively charged metal rod. As a result, the sphere will be ____ and the metal rod will be ____.

• positively charged

• negatively charged

• neutral

• much more massive

A neutral metal sphere is touched by a positively charged metal rod. During the process, electrons are transferred from the _____ to the _____ and the sphere acquires a _____ charge.

• neutral sphere, charged rod, negative

• neutral sphere, charged rod, positive

• charged rod, neutral sphere, negative

• charged rod, neutral sphere, positive

A neutral metal sphere is touched by a positively charged metal rod.  During the process, protons are transferred from the _____ to the _____ and the sphere acquires a _____ charge.

• charged rod, neutral sphere, negative

• charged rod, neutral sphere, positive

• neutral sphere, charged rod, positive

• nonsense! None of these describe what occurs.

A metal sphere is electrically neutral. It is touched by a positively charged metal rod. As a result, the metal sphere becomes charged positively. Which of the following do not occur during the process?

• Electrons are transferred from the sphere to the rod.

• Positive electrons are moved between the two objects.

• The metal sphere loses electrons

• The overall charge of the system is conserved