Q1 of 54 Page 276

A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the axis of the loop is in

Any point on the axis of a bar magnet (or a magnetic dipole) is called as a point at “End-on position”. In the given case, when the loop is replaced by a dipole, and hence the point on the axis of the loop will come at an axial position of dipole as well. So, the point can be considered at ‘end-on position’.

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10

Can the dip at a place be (a) zero (b) 90°?

 11

The reduction factor K of a tangent galvanometer is written on the instrument. The manual says that the current is obtained by multiplying this factor to tan θ. The procedure works well at Bhuwaneshwar. Will the procedure work if the instrument is taken to Nepal? If there is some error, can it be corrected by correcting the manual or the instrument will have to be taken back to the factory?

 2

A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the loop is in

 3

When a current in a circular loop is equivalently replaced by a magnetic dipole,