III:Q1Electrostatic Charging: Electric Field and Electric Forces

Which of the following is true about electric charge?

• It can be lost

• It can be destroyed

• It is created from a chemical reaction

• it can be transferred from atom to atom

What happens when a positively charged rod is brought near a neutral plastic ball?

• protons on the ball are attracted to the positive rod and move to the near side of the ball

• electrons in the ball are attracted to the near side of the ball

• electrons in the ball are repelled to the far side of the plastic ball

• the protons on the ball repelled by the positive rod and move to the far side of the ball

A neutral object

• . is repelled by a negatively or a positively charged object

• is attracted to positively charged objects only

• is attracted to negatively charged objects only

• is attracted to either a negatively or a positively charged object

How can object becomes positively charged?

• It loses electrons

• Protons are added to it

• The number of electrons is increased

• Neutrons are removed from it

. Electron spins around a nucleus of an atom. What is the charge of an electron?

• -1.06 x 10^-19C

• -6.10 x 10^-19C

• -1.60 x 10^-19C

• -1.60 x 10^19C

What do you call the law that quantifies the force of attraction and repulsion between charged bodies?

• Newton’s Law

• Faraday’s Law

• Coulomb’s Law

• Cavendish’s Law

The direction of electric field due +Q positive charge is…

• away from the charge

• towards the charge

• Both A and B

• None of the above

The electric field intensity at a point situated 4 metres from a point charge is 200 N/C. If the distance is reduced to 2 metres, the field intensity will be...

• 400 N/C

• 600 N/C

• 800 N/C

• 1200 N/C

Which, among the following is the correct expression for an electric field?

• E=F/C

• E=FC

• E=F/Q

• E=FQ

What is the charge of an electroscope done by induction?

• same charge as the charging body

• opposite charge as the charging body

• a neutral charge

• a static electric charge