Force on a Current Carrying Wire
Physics: Edexcel IGCSE, topic 6.2.7
Force on a Current Carrying Wire
The strength of a magnetic field, called the magnetic flux density (B), is measured in Tesla (T). The force produced = magnetic flux density × current × length of conductor. F = B x I x L.
Length of wire in the field
- The force on a wire in a magnetic field is directly proportional to the length of wire in the magnetic field.
Strength of magnetic field
- The force on a wire in a magnetic field is directly proportional to the strength of the magnetic field.
Current flowing through the wire
- The force on a wire in a magnetic field is directly proportional to the current through the wire.
Test yourself on Force on a Current Carrying Wire
Which of these does the force on a wire in a magnetic field depend on?
What are the units for magnetic flux density?