EASY

WHEN WAS J.J. THOMPSON DISCOVERED THE PRESENCE OF ELECTRONS IN A CHARGE?

• 1895

• 1896

• 1897

• 1898

This ranks materials based on their tendency to acquire charge.

• Triboelectric series

• Electron Affinity

• Electron Scale

• Neutrality Rank

Using the letters A to E, arrange the following steps in charging an object through induction.

A. Attach the metal sphere on an insulating stand.

B. Put the rod close to the sphere but not too close for the objects to touch.

C. The charges will be rearranged in the sphere.

D. Attach a grounded wire to the metal sphere.

E. Remove the grounded wire and move the rod away from the metal sphere. ____

• A,B,C,D,E

• B,D,E,A,C

• B,A,C,D,E

• D,E,A,B,C

It states that the algebraic sum of all the electric charges in any closed system is constant. For example, when you rub a piece of plastic rod with fur, the rod becomes negatively charged, and the fur becomes positively charged.

• Electron Affinity

• Law of conservation of Charge

• Electronegativity

• Law of Electrons

Which of the following correctly describe charge carriers in electrostatic charging?

• The charge carriers are protons. They are the particles that determine the nature of the object and they can easily be transferred to objects.

• The charge carriers are electrons. They are loosely bound in the atoms and they can easily be transferred.

• The charge carriers are protons. They determine the atomic number of the materials.

• The charge carriers are electrons. They are tightly bound in the atoms, thus, they are ideal for transferring the charge.