What is the force on the small charge in the picture below ?
What is the field strength where the small charge is ?
1 - How many types of electrical charge is there ?
2 - What is the unit of electrical charge ?
3 - What does the law of conserved charge say ?
4 - How is the direction of an electrical field defined ?
6 - What is Coulombs law of electrical fields ?
7 - What is electrical field strength ?
8 - What is electrical field strength close to a sphere with a charge Q ?
9 - How do you add electrical fields ?
10 - What is the unit for electrical field strength ?
12 -
What is the force on a small charge that is put in the field below ?
12.5 - What is the formula for the electric field above if a voltage V is put on the plates ?
13 - What is the force on a charge of 2 μC if it is put in a uniform field with strength 2 N/C ?
There is positive and negative charge in nature The unit for charge is coulomb (C). This is a very large unit and so one is
often using μC which is = 10-6C. The law of conservation of charge states that charge can neither be created
nor destroyed. The direction of an electrical field is the direction in which a small positive
electric charge would accelerate (move) if it is put in this field. Look at the data booklet: Look at the data booklet: The unit for electrical field strength is N/C (from E=F/Q)
or V/m. 1 N/C = 1 V/m
Since the field (E) is the same everywhere (it is uniform), the force is also the same everywhere and
it is given by the formula F = E • Q where Q is the charge value of the small charge in C and E is the
electrical field strength in N/C.
The force is F = Q • E = 2•10-6 • 2 = 4 μN
Look at the data booklet:
The electric field between two plates at a distance (d) with a voltage (V) between them
is
E = V/d
Unit: V/m
Look at the data booklet:
Look at the data booklet: 
