A long straight wire of radius R = 1.5 mm carries a steady current i 0 of 60 A. Then the magnetic field at a radial distance r = 1 mm from the centre of the wire is-
Text Solution
Verified by ExpertsThe correct answer is:
D
Convert the radius from mm to 
.
Use the formula for the magnetic field around a long straight wire:
Substitute the values into the formula:
Simplify the expression:
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A vertical straight conductor carries a current vertically upwards. A point P lies to the east of i…
If a copper rod carries a direct current, the magnetic field associated with the current will be
A charge q coulomb moves in a circle at n revolutions per second and the radius of the circle is r …
An infinitely long straight conductor is bent into the shape as shown in the figure. It carries a c…
A current i ampere flows in a circular arc of wire whose radius is R, which subtend an angle 3π/2 r…
A current i ampere flows along the inner conductor of a coaxial cable and returns along the outer c…