Q. $1\ Wb/m^{2}$ is equal to
A) $10^{4}\ gauss\$
B) $4\pi \times 10^{- 3}\ gauss$
C) $10^{2}\ gauss$
D) $10^{- 4}\ gauss$
Explanation
If a charge of 1 C moving with a velocity of $1\ {ms}^{- 1}$ perpendicular to a uniform magnetic field experiences a force of 1 N, then the magnitude of the field is 1 T. The SI unit of magnetic field is $Wb\ m^{- 2}.$ Thus, $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 1\ T = 1\ {NA}^{- 1}m^{- 1} = 1\ {Wbm}^{- 2}$ In CGS systems $\ \ \ \ \ \ \ \ \ \ 1\ tesla = 10^{4}\ gauss = 1\ {Wbm}^{- 2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.