A long, straight, solid metal wire of radius 2 mm carries a current uniformly distributed…
Physics · JEE Main · NTA Exams — Magnetic Effects of Current and Magnetism
A long, straight, solid metal wire of radius 2 mm carries a current uniformly distributed over its circular cross-section. The magnetic field induction at a distance 2 mm from its axis is B. Then the magnetic field induction at distance 1 mm from axis will be
- B
- B/2
- 2B
- 4B
Answer
(B) B/2
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- An electron is moving along positive x axis. A uniform electric field exists towards negative y axis. What…
- A wire of length L metre carrying a current I ampere is bent in the form of a circle. Its magnitude of…
- If an electron and a proton having same momenta enter perpendicularly to a magnetic field, then
- Three straight parallel current carrying conductors are shown in the figure. The force experienced by the…
- A charged particle enters a uniform magnetic field with velocity vector at an angle of 45º with the magnetic…
- Two thin long, parallel wires, separated by a distance d carry a current of i Amp in the same direction. They…
- An element d = dx i (where dx = 1 cm) is placed at the origin and carries a large current I = 10A. What is…
- A charged particle of mass m and charge q travels on a circular path of radius r that is perpendicular to a…
More Magnetic Effects of Current and Magnetism questions · Browse all practice questions