6c Electromagnetic Effects Quiz physics alevel edexcel

Flux linkage is a measure of:

• a) The total magnetic flux passing through a surface

• b) The number of turns of wire multiplied by the magnetic flux through each turn

• c) The ratio of magnetic flux to magnetic flux density

• d) The energy stored in a magnetic field

The motor effec trefers to the phenomenon where:

• a)A magnetic field is produced by a current-carrying wire

• b)A current is induced in a wire by a changing magnetic field

• c)A force is experienced by a current-carrying wire in a magnetic field

• d)A magnetic field is shielded by a conducting material

The SI unit of magnetic flux is:

• a)Weber

• b)Joule

• c)Tesla

• d)Ampere

A magnetic field is produced by:

• a)Stationary electric charges

• b)Moving electric charges

• c)Stationary magnetic charges

• d)Moving magnetic charges

The SI unit of magnetic flux density is:

• a) Weber

• b) Joule

• c) Tesla

• d) Ampere

Magnetic poles always exist in:

• a)Isolation

• b)Pairs

• c)Solidsonly

• d)Gasesonly

Fleming's left-hand rule is used to determine the direction of:

• a)Magnetic field lines

• b)Magnetic flux

• c)Induced current

• d)Electric current

Magnetic flux density is defined as the:

• a)Ratio of magnetic flux to the area

• b)Number of magnetic field lines per unit area

• c)Force experienced by a magnetic pole in a magnetic field

• d)Energy stored in a magnetic field per unit volume

Magnetic flux is a measure of:

• a)The strength of a magnetic field

• b)The number of magnetic field lines passing through a surface

• c)The energy stored in a magnetic field

• d)The ability of a material to conduct magnetism

The magnetic force experienced by a wire carrying a current in a magnetic field depends on:

• a)The length of the wire

• b)The resistance of the wire

• c)The strength of the magnetic field and the current in the wire

• d)The temperature of the wire