4.2 Electric Field Strength

Question 1

What is electric field strength?

Answer 1

Force per unit charge. It is the force a charged object will experience per 1C of charge when within an electric field.

Question 2

Equation for electric field strength (with force and charge)?

Answer 2

E = F/Q

Question 3

What are the units of electric field strength ?

Answer 3

NC^-1

Question 4

Is electric field strength a scalar or a vector? Why?

Answer 4

vector
The direction of Electric Field Strength is the same as direction that a positive charge due to force acting on it will take when in an electric field.

Question 5

What happens to this field strength when in a uniform electric field?

Answer 5

It stays the same throughout.

Question 6

What happens to electric field strength when in a radial electric field?

Answer 6

It depends upon position, r , in the radial electric field.

Question 7

What is the charge of a proton?

Answer 7

1.6 x 10^-19C

Question 8

What is the mass of the proton?

Answer 8

1.7 x 10^-27kg

Question 9

What is the mass of an electron?

Answer 9

9.11 x 10^-31

Question 10

What is the charge of an electron?

Answer 10

-1.6 x 10^-19