Lecture 3

Question 1

Law 1

Answer 1

Unlike charges attract; like charges repel.

Question 2

Law 2

Answer 2

Electric charge of a conductor is concentrated along the sharpest curvature of the surface

Question 3

Law 3

Answer 3

Electric charge distribution is uniform throughout or on the surface

Question 4

Law 4

Answer 4

Electrostatic force is directly proportional to the product of the electrostatic charges and inversely proportional to the square of the distance between them.

Question 5

Faraday’s Law

Answer 5

The first law of electromagnetic induction; A moving magnetic field induces an electric current in a wire
The size of induced current depends on:
-Strength of magnetic field
- Velocity of the field as it cuts through the conductor
- Angle of the conductor to the magnetic field
- Number of turns of the conductor

Question 6

amplitude

Answer 6

one half the range from crest to valley over which the sine wave varies

Question 7

frequency

Answer 7

the number of wavelengths that pass a point of observation per second
-the rate of rise and fall