Question

A magnet when placed perpendicular to a uniform field of strength `10^(-4)Wb//m^(2)` experiences a mximum couple of moment `4xx10^(-5)N//m`. What is its magnetic moment?
A. `0.4Axxm^(2)`
B. `0.2Axxm^(2)`
C. `0.16Axxm^(2)`
D. `0.04Axxm^(2)`

Answer 1

Correct Answer - A
`tau_(max)=MBimplies4xx10^(-5) =Mxx10^(-4) impliesM=0.4Axxm^(2)`