Chapter 5

Question 1

What is charge?

Answer 1

Charge is a property of matter that causes it to experience a force to other charged matter.

Question 2

What is an electric field?

Answer 2

Electric field is the electrostatic force on a stationary particle of unit charge 1 C.

Question 3

Electric Field lines of one positive charge and one negative charge?

Answer 3

Question 4

Electric field lines of 2 positive (or negative) charges?

Answer 4

Question 5

What is voltage?

Answer 5

Voltage is the difference in electric potential energy of a charge that moves in an electric field per unit charge

Question 6

What is an electronvolt?

Answer 6

Electronvolt (eV) is the amount of work needed to change the electric potential of an electron by 1 V.

Question 7

What is current?

Answer 7

Current is the amount of charge that flows per unit time.

Question 8

Kirchhoff’s loop law

Answer 8

Question 9

Kirchhoffs’ Junction law

Answer 9

Question 10

Adding resistors in series

Answer 10

Question 11

Adding resistors in parrallel

Answer 11

Question 12

What is an ammeter and where is it placed?

Answer 12

Question 13

What is a voltmeter and where is it placed?

Answer 13

Question 14

Why does power dissapation occur?

Answer 14

If current is flowing through an element with resistance, this causes the element to heat up. This means some energy is lost to heat. The rate at which energy is dissipated is the power dissipation:

Question 15

What is terminal voltage and how does it differ over time?

Answer 15

Question 16

V/I Graph of a variable resistor in relation to internal resistance?

Answer 16

Question 17

What is a curved V/I diagram?

Answer 17

Question 18

How do primary cells differ from secondary cells?

Answer 18

A secondary cell or battery can be recharged after use by passing current through the circuit in opposite direction to the current during the discharge. Wheras a primary cell cannot.

Question 19

What does ⊙ mean?

Answer 19

Current flowing towards you

Question 20

What does ⊗ mean?

Answer 20

Current flowing away from you

Question 21

What does . mean?

Answer 21

Field flowing towards you

Question 22

What does X mean?

Answer 22

Field flowing away from you

Question 23

What is the right hand rule (all inclusive)?

Answer 23

Question 24

Force of a charge moving parrallel to a magnetic field?

Answer 24

When a charge moves parallel to a magnetic field, the angle θ is zero and therefore the magnetic force is zero. The force is thus at its maximum when the wire or charge is perpendicular to the magnetic field.

Question 25

Movement of a charged particle in a magnetic field

Answer 25