Question

Which of the following is constant throughout a uniform magnetic field?

• A. Magnetic field strength
• B. Magnetic flux
• C. Magnetic force
• D. Electric field strength

Hint:

In a uniform magnetic field, both the magnetic field strength and the magnetic flux remain constant.

Answer 1

The Correct Option is A

1. Magnetic field strength:
In a uniform magnetic field, the magnetic field strength, denoted by \( B \), remains constant throughout the entire region. A uniform magnetic field means that both the direction and magnitude of the magnetic field are the same at every point in the region. 2. Magnetic flux:
Magnetic flux is defined as the product of the magnetic field strength \( B \) and the area \( A \) through which the field passes, i.e., \( \Phi_B = B \cdot A \). In a uniform magnetic field, both \( B \) and \( A \) are constant, hence the magnetic flux will also be constant. 3. Magnetic force:
The magnetic force on a moving charge or current-carrying conductor depends on the velocity and the angle of the charge with respect to the magnetic field. Therefore, the magnetic force is not constant throughout a uniform magnetic field. 4. Electric field strength:
The electric field strength varies based on the presence of other electric charges or changing magnetic fields. It is not constant in a uniform magnetic field.