CIE A-level Physics - Static electricity (Ch 21, 22, 23)

What type of object(s) can be charged by friction?

• insulators

• metals

• insulators and metals

• all materials

When a charged rub rod is near small pieces of paper and it attracts them, this observation is due to ...

• electrostatic conduction

• electrostatic induction

• electrostatic infusion

• electrostatic electrification

What conclusion can be made by looking at this image?

• plates have like charges

• plates are both grounded

• electric field between the plates is uniform

• semolina seeds do not have electrons

Draw the electric field lines between two metal plates with alike charges.

Electric field lines drawn on paper are able to tell us ...

• only field strength

• only field direction

• field strength and direction

• field strength, direction and change with time

These two charges are...

• positive

• negative

• different in value

• alike

In the image, in what part of the building would be the strongest electric field?

What is the equation that defines electric field strength?

Answer explanation

E = F/Q

In a situation like this, how do we calculate the electric field strength between the plates?

• E = FQ

• E = V . d

• E = - ΔV/Δd

• E = 1/2 CV²

A particle following this trajectory has ... charge