Concepts Of Physics MCQ Edition [Volume 2]
- Exam
- Concepts Of Physics MCQ Edition [Volume 2]
- Subject
- Physics
- Chapter
- Magnetic Field
Concepts Of Physics MCQ Edition [Volume 2] · Physics · Magnetic Field
A 10 -cm long portion of a straight wire carrying a 10 A current is...
A -cm long portion of a straight wire carrying a current is situated in a magnetic field that is oriented at an angle of 53^{}^{{}^{\circ}} relative to the wire. What magnetic force acts on this portion of the wire?
Options
- A perpendicular to both the wire and the field
- B parallel to the magnetic field
- C perpendicular to both the wire and the field
- D perpendicular to both the wire and the field
Correct answer
A. perpendicular to both the wire and the field
Step-by-step solution
The magnetic force on a current-carrying wire is given by the formula:
The magnitude of the force is:
Given values are:
\theta = 53^{}^{{}^{\circ}}
Substituting these values into the formula:
F = 10 \times 0.1 \times 0.1 \times \sin(53^{}^{{}^{\circ}})
From the cross product , the direction of the magnetic force is perpendicular to both the wire and the magnetic field.
The magnitude of the force is:
Given values are:
\theta = 53^{}^{{}^{\circ}}
Substituting these values into the formula:
F = 10 \times 0.1 \times 0.1 \times \sin(53^{}^{{}^{\circ}})
From the cross product , the direction of the magnetic force is perpendicular to both the wire and the magnetic field.