Magnetic Fields

Question 1

Magnetic Flux Density (B)

Answer 1

Defined by the equations F = BIL sinѲ

F = Force on wire length L carrying a current I at an angle Ѳ to the magnetic field.

Question 2

Flemings Right-hand rule (GeneRIGHTus = Generators)

Answer 2

The Generator rule. The motion being thuMb, field First finger, current seCond finger
Thummmmmmmmb, motion. Ffffffffffirst=field, Seccccccond = current.

Question 3

Flemings Left-hand rule (As it’s not right hand rule, must be Motors)

Answer 3

The Motor rule. The motion being thuMb, field First finger, current seCond finger.

Question 4

Tesla (a unit of magnetic flux density, B from N/A m) (kg/As2)

Answer 4

Magnetic flux density when a 1m wire carries 1A at 90o to the field and experiences a 1N Force.

Also, a particle carrying a charge of 1C passing through a field of 1T at 1ms-1 experiences a force of magnitude 1N.