Electricity Definitions

Question 1

Coulomb’s Law

Answer 1

The magnitude of the electrostatic force exerted by one point change (Q₁) on another point change (Q₂) is directly proportional to the product of the magnitude and the charges inversely proportional to the square of the distance (r) between them

Question 2

Electric field

Answer 2

A region of space in which an electric charge experiences a force. The direction of the electric field at a point is the direction that a positive test charge would move if placed at that point

Question 3

Electric field at a point

Answer 3

The electric field at a point is the electrostatic force experienced per unit positive charge placed at that point

Question 4

Ohm’s Law in words

Answer 4

The potential difference across a conductor is directly proportional to the current in the conductor at constant temperature

Question 5

EMF

Answer 5

As the maximum energy provided by a battery per unit charge passing through it

Question 6

Rms potential difference

Answer 6

Is the AC potential difference which dissipates/produces the same amount of energy as an equivalent DC potential difference

Question 7

Rms current

Answer 7

Is the alternative current which dissipates/produces the same amount of energy as an equivalent direct current (DC)