Charges And Electric Charges Flashcards
1
Q
How many electrons are needed to make up a charge of one coulomb?
A
6.25 x 10 ^-19
2
Q
What is a charge of an electron?
A
1.6 x 10^-19
3
Q
What is an electric field?
A
The electric field at a point is the force experienced per unit positive charge at that point.
4
Q
How is an electric field drawn?
A
Such a way that a positive charge placed at the point will experience a force in the direction of the tangent of the line.
5
Q
Electric field lines are…(3)
A
- ) In 3-D from positive to negative
- ) Drawn perpendicular to the charged surface
- ) Concentrated in regions close to the charged body
6
Q
What is an electric field line?
A
The path a positive charge would take if it is free to move.
7
Q
What is the symbol for force in electric fields and what is the corresponding units?
A
E and it is in N.C^-1
8
Q
What is the general formula for both types of fields?
A
E=F/Q1
