Physics · 2026
JEE Main · 28 January 2026, Shift 2 · Q38
A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section. Magnetic field due to…
A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section. Magnetic field due to this current is :
A. maximum at either ends of the conductor and minimum at the midpoint
B. maximum at the axis of the conductor
C. minimum at the surface of the conductor
D. minimum at the axis of the conductor
E. same at all points in the cross-section of the conductor
Choose the correct answer from the options given below :
Official answer
From NTA’s final answer key for this paper.
(2)
D Only
More from Magnetic Field and Forces
- The charged particle moving in a uniform magnetic field of (3 i+2 j) T has an acceleration (4 i-x/2 j) m / s^2. The value of x is2026
- 1 μ C charge moving with velocity v=( i-2 j+3 k) m / s in the region of magnetic field B=(2 i+3 j-5 k) T. The magnitude of force acting on it is √α ×…2026
- A 5 mg particle carrying a charge of 5 π × 10^-6 C is moving with velocity of (3 i+2 k) × 10^-2 m / s in a region having magnetic field B=0.1 k Wb /…2026
- A particle having charge 10^-9 C moving in x-y plane in fields of 0.4 j N / C and 4 × 10^-3 k T experiences a force of (4 i+2 j) × 10^-10 N. The…2026
- A moving coil of galvanometer when shunted with 2 Ω resistance gives a full scale deflection for a current of 500 mA. When a resistance of 470 Ω is…2026
- A circular coil of radius 2 cm and 125 turns carries a current of 1 A. The coil is placed in a uniform magnetic field of magnitude 0.4 T. The axis of…2026
- A current carrying circular loop of radius 2 cm with unit normal n=(k+ i)/(√2) is placed in a magnetic field, B=B_o(3 i+2 k). If B_o=4 × 10^-3 T and…2026
- An insulated wire is wound so that it forms a flat coil with N=200 turns. The radius of the innermost turn is r_1=3 cm, and of the outermost turn…2026
JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.