A certain amount of current flows through a ring-shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil ?

Related Mcqs:

Which of the following statements is correct ?

A. The magnetic flux inside an exciting coil is lower than its outside surface B. The magnetic flux inside an exciting coil is zero C. The magnetic flux inside the exciting coil is greater than its outside surface D. The magnetic flux inside the exciting coil is same as on its outside surface...

Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials

A. circular B. triangular C. rectangular D. none of the above...

When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle?

A. will be zero B. will be infinite C. will depend on the amount of e.m.f. applied D. will depend on the radius of the circle...

Ferrites are a sub-group of_______________?

A. non-magnetic materials B. ferro-magnetic materials C. paramagnetic materials D. ferri-magnetic materials...

Tesla is a unit of_____________?

A. field strength B. inductance C. flux density D. flux...