Physics
Grade-10
Easy
Question
The force exerted on a current-carrying wire placed in a magnetic field is maximum when the angle between the wire and the direction of the magnetic field is ____.
- 45o
- 60o
- 90o
- 180o
Hint:
A current-carrying wire feels a force in the presence of an external magnetic field. It is found to be F=BILsinθ
The correct answer is: 90o
A current-carrying wire feels a force in the presence of an external magnetic field. It is found to be F=BILsinθ,
where,
L is the length of the wire,
I is the current, and
θ is the angle between the current direction and the magnetic field.
As the value of sin 90 degrees is 1 which is maximum, the force exerted on a current-carrying wire placed in a magnetic field is maximum when the angle between the wire and the direction of magnetic field is 90 degree
where,
L is the length of the wire,
I is the current, and
θ is the angle between the current direction and the magnetic field.
As the value of sin 90 degrees is 1 which is maximum, the force exerted on a current-carrying wire placed in a magnetic field is maximum when the angle between the wire and the direction of magnetic field is 90 degree
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