Exams › NEET › Physics

A cylindrical conductor of radius R is carrying a constant current. The plot of the magnitude of the magnetic field, B with the distance, d, from the centre of the conductor, is correctly represented by the figure:

1. Option (a)
2. Option (b)
3. Option (c)
4. Option (d)

Correct answer: Option (b)

Solution

Inside the conductor (d < R), the magnetic field increases linearly with distance from the center due to the proportionality to the enclosed current. Outside the conductor (d ≥ R), the magnetic field decreases inversely with distance. Option (b) correctly represents this behavior.

Related NEET Physics questions

• An alternating electric field, of frequency ν, is applied across the dees (radius = R) of a cyclotron that is being used to accelerate protons (mass = m). The operating magnetic field (B) used in the cyclotron and the kinetic energy (K) of the proton beam, produced by it, are given by:
• A proton carrying 1 MeV kinetic energy is moving in a circular path of radius R in uniform magnetic field. What should be the energy of an α-particle to describe a circle of same radius in the same field?
• A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will
• An electron enters a region where magnetic field (\( \vec{B} \)) and electric field (\( \vec{E} \)) are mutually perpendicular, then
• A \( 10 \, \text{eV} \) electron is circulating in a plane at right angles to a uniform field at magnetic induction \( 10^{-4} \, \text{Wb/m}^2 \) (\( = 1.0 \, \text{gauss} \)). The orbital radius of the electron is
• A uniform magnetic field acts at right angles to the direction of motion of an electron. As a result, the electron moves in a circular path of radius \( 2 \, \text{cm} \). If the speed of electron is doubled, then the radius of the circular path will be

⚔️ Practice NEET Physics free + battle 1v1 →