Grade 10 Basic Electrostatics

16pC is equal to ____________ nC

• 16 nC

• 16 x 10^-3

• 16000

• 0,16

When an object gains electrons it becomes __________

• Neutral

• Positively charged

• Negatively charged

Tags

NGSS.MS-PS2-3

When a silver atom looses an electron, its net charge (in coulombs) is

• +1

• -1

• +1,6 x 10^-19

• -1,6 x 10^-19

Tags

NGSS.HS-PS2-4

When a ballon is rubbed agaist a jersey and brought near a thin stream of tap water. The balloon attracts the thin stream of water because_____

• water is acidic

• water is a base

• water gets polarized

• water is liquid

The charge on a metallic sphere is

• concentrated at the top

• concentrated at the bottom

• evenly distributed

• not distributed at all

Tags

NGSS.MS-PS2-5

Charge on a sharp or pointed object is _________

• concentrated at the center

• concentrated at the edge

• evenly distributed

• concentrated at the bottom

When -2nC comes in contact with +6nC the charge of each sphere after contact is _________

• 4 nC

• 8 nC

• -2 nC

• +2 nC

When -2 C is brought to contact with +8 C, __________ electrons are transferred.

• 3,75 x 10 ¹⁹

• 1,6 x 10 ^-19

• 3,75 x 10^-19

• 6

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

• positively charged because it has excess electrons

• negatively charged because it has excess electrons

• positively charged because it has a deficiency of electrons

• negatively charged because it has a deficiency of electrons

Tags

NGSS.MS-PS1-1

When a magnesium atoms looses two electrons, it charge becomes______C

• +1,6 x10^-19

• -1,6 x10^-19

• +3,2 x10^-19

• -3,2x10^-19