Navigate

A long straight wire of radius a carries a steady current I. The current is uniformly

A long straight wire of radius a carries a steady current I. The current is uniformly distributed over its cross-section. The ratio of the magnetic field B and B’ at radial distances a/2 and 2a respectively, from the axis of the wire is

Options

(a) (1/2)
(b) 1
(c) 4
(d) (1/4)

Correct Answer:

1

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

NEET2016
admin:

Related Questions

  1. Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
  2. A particle covers half of its total distance with speed v1 and the rest half distance
  3. A parallel beam of fast moving electrons is incident normally on a narrow slit.
  4. The photoelectric threshold frequency of a metal is ν. When light of frequency 4ν
  5. If a spring of spring constant k stretched by a length x under tension T, the energy