Question icon
Engineering Entrance Exams

The ratio of magnetic field and magnetic moment at the centre of a current carrying circular loop is x. When both the current and radius is doubled the ratio will be (A) x / 8 (B) x / 4 (C) x / 2 (D) 2x

Profile image of aniket anand
12 Years agoGrade
Answers icon

2 Answers

Profile image of Arun
6 Years ago
The ratio of magnetic field and magnetic moment at the centre of a current carrying circular loop is x. When both the current and radius is doubled the ratio will be. x/8.
Profile image of Vikas TU
6 Years ago
Dear student 
B = mew *i/2a
B/M = x (given)
When both current and the radius re doubled 
mew /(2*pi*(2a)^3) = x/8 

question mark
Hello,
 
Can we learn and prepare for MHT-CET online ?
engineering entrance exams

Last Activity: 4 Years ago