Question

Question 13 Not yet answered Points out of 6.00P Flag question A circular loop of wire with a radius of 15 cm lies in the xy plane and carries a current of 1.9 A, counterclockwise when viewed from a point on the positive z axis. The magnitude and direction of its magnetic dipole moment are: x y Select one: O a. 77.60 A m2, -z direction O b. 77.60 A m^2, +z direction O c. 11.94 A m^2, +z direction O d. 11.94 A m^2, +y direction e. 11.94 A m^2, -z direction

Answer 1

Calculating Area of loop

$A= \pi r^2$

$A= \pi * (15*10^{-2})^2$

magnetic Dipole moment is given by

$\mu = IA$

So,

$\mu = 1*1.9* (7.07*10^{-2})$

$\mu = 0.134 A m^2$

using right hand rule, the direction will be in positive direction.

Either some data or options provided are wrong because method and calculations are perfect, I checked thrice