Question

The magnitude of the force acting on a current carrying wire placed in a magnetic field in the direction perpendicular to its length depends on ___.

• A. length of the wire
• B. current I flowing in the wire
• C. strength of magnetic field
• D. mass of wire

Answer 1

Answer: (A), (B), (C)

The correct options are
A

length of the wire

B

current I flowing in the wire

C

strength of magnetic field

The magnitude of the force acting on a current carrying wire placed in a magnetic field in the direction perpendicular to its length depends on the following three factors:

1) The force F is directly proportional to the strength of magnetic field B, i.e.,

$F\propto B$

2) The force F is directly proportional to the length of the wire L (within magnetic field), i.e.,

$F\propto L$

3) The force F is directly proportional to current I flowing in the wire, ie.,

$F\propto I$