Electric Fields

Question 1

Electric field

Answer 1

The region in which a charged particle experiences a force

Question 2

Electric field strength at a point is…

Answer 2

is the force per coulomb exerted on a positive charge placed at that point in the field

Question 3

Electric field strength equation

Answer 3

Electric field strength = Force / Charge

Question 4

Electric field strength:

Answer 4

• Electric field strength is a vector quantity
• The direction of the field is the direction of the force on a positive charge

Question 5

Uniform electric field:

Answer 5

• Field lines directed from the positive to negative plate
• The electric field lines are evenly spaced
• The electric field lines strength is equal at all points in this field

Question 6

Non - uniform electric field:

Answer 6

• The electric field is stringer when the lines are closer together

Question 7

The amount of deflection a particle experiences depends on:

Answer 7

• Mass (the greater the mass, the smaller the deflection)
• Charge (the greater the magnitude of the charge of the particle, the greater the deflection)
• Speed (the greater the speed of the particle, the smaller the deflection)

Question 8

A positive charge will travel towards the…

Answer 8

Negative plate and negative towards the positive plate

Question 9

Electric fields of a positively charged spherical conductor

Answer 9

Field lines away from the centre of conductor

Question 10

Electric fields of a negatively charged spherical conductor

Answer 10

Field lines towards the centre of the conductor

Question 11

Electric potential definition

Answer 11

The work done per unit positive charge in bringing a small test charge from infinity to a defined point

Question 12

Electric potential:

Answer 12

• When a test charge moves closer to a negative charge, its electric potential decreases
• When a test charge moves closer to a positive charge, its electric potential increases