A magnetic field of 5 10^-5T is produced at a perpendicular distance of 0.2m from a long straight wire carrying electric current. If the permeability of free space is 4 10^-7 Tm/A. The current passin…

Question

A magnetic field of 5 10^-5T is produced at a perpendicular distance of 0.2m from a long straight wire carrying electric current. If the permeability of free space is 4 10^-7 Tm/A. The current passing through the wire in A is:

Accepted Answer

Correct answer: C. (c) Magnetic field long straight current carrying wire B= _02 Ir ⇒5 10^-3= 4 10^-72 I0.2 ∴I= 5 10 2 0.24 10=0.5 10^2=50A

$A magnetic field of 5 \times 10^{- 5} T is produced at a perpendicular distance of 0.2 m from a long straight wire carrying electric current. If the permeability of free space is 4 π \times 10^{- 7} Tm / A . The current passing through the wire in A is:$

Solution

More Moving Charges & Magnetism PYQs