- Electrical circuits can be used as a model for magnetic circuits. What is meant by a model in this case?
- A miniature version of something, for example an aeroplane or train.
- A way of explaining something complicated in easier terms.
- A formula entered into a spreadsheet to generate idealised data which can be shown on a graph.
- A good looking girl or boy that shows off fashionable clothing

- Which one of these quantities is analogous to electric current in a magnetic circuit?
- Flux
- Flux density
- Magnetic field strength
- Magnetomotive force

- Which one of these quantities is analogous to potential difference in a magnetic circuit?
- Flux
- Flux density
- Magnetic field strength
- Magnetomotive force

- Which one of these is the correct term for the ration between magnetomotive force and flux?
- Resistance
- Reluctance
- Remanance
- Truculence

- Which one of these statements correctly describes permeance?
- The product of magnetomotive force and flux.
- The permeability of free space.
- The absolute permeability of a material
- The reciprocal of reluctance.

- Which one of these correctly describes the absolute permeability, m, of a material and its units?
- m
_{0}× m_{r}H m^{-1} - m
_{0}÷ m_{r}H m^{-1} - m
_{0}× m_{r}m H^{-1} - m
_{0}÷ m_{r}No units

- m
- The electrical analogy to permeability is:
- Resistivity
- Resistance
- Conductivity
- Conductance

- Which one of these statements is NOT correct when flux passes through two different materials that are in series?
- The magnetomotive force is the same throughout the circuit.
- The flux is the same throughout the circuit.
- The reluctances add up to the total reluctance.
- The magnetomotive forces add up to the source magnetomotive force.

Correct statements about a parallel magnetic circuit include:

1) The flux in each branch adds up to the total flux;

2) The magnetomotive force is the same throughout the circuit.

3) In a parallel circuit, the units for magnetomotive force are metres per amp (m A-1);

4) The reciprocals of the reluctances add up to the reciprocal of the total reluctance.

Answer:- If 1 and 2 only are correct
- 2 and 4 only are correct
- 1, 2, and 4 only are correct.
- All of them are correct.

- Which one of these is NOT correct when comparing electric circuits with magnetic circuits?
- The electric field strength is the voltage per unit distance and the magnetic field strength is the magnetomotive force per unit distance.
- Electric circuits can be isolated by insulation, where magnetic fields cannot be confined by insulators.
- Resistance is independent of the current density, while reluctance is dependent on the flux.
- Energy is needed to maintain both a current in an electrical circuit and flux in a magnetic circuit.