P4.5.4 - Force on a Current-Carrying Conductor Flashcards
1
Q
When will a current-carrying conductor experience force? [1]
A
when it interacts with an external magnetic field
2
Q
When will a current-carrying conductor only experience force? [2]
A
if the current through it is perpendicular to the direction of the magnetic field lines
3
Q
What are ways to reverse the direction of the force? [2]
A
- reversing the direction of the current
- reversing the direction of the magnetic field
4
Q
What does Fleming’s left-hand rule find out? [1]
A
the direction of the force
5
Q
What does the direction of the force on a CCC depend on? [2]
A
- direction of the current
- direction of the magnetic field
6
Q
How do we utilise Fleming’s left hand rule? [3]
A
- thumb points in the direction of the force
- index finger points in the direction of the magnetic field
- middle finger points in the direction of the current flow
7
Q
When is Fleming’s left hand rule used? [1]
A
in electric motors
8
Q
When are electric motors used (examples) [2]
A
- fans
- printers
