A. Decreases with increasing cross sectional area of material B. Increases with increasing cross-sec-tional area of material C. Does not vary with increasing cross-sectional area of material D. Any of the above
A. Is constant and has same value in energy part of the magnetic field B. Increases continuously from initial value to final value C. Decreases continuously from initial value to final value D. First increases and then decreases till it becomes zero
A. It assures a position right angle to magnetic field B. It starts rotating C. It assures a position which follows a line of magnetic flux D. None of the above
A. A line vertical to the flux lines B. The mean length of a ring shaped coil C. A line of magnetic flux in a non-uniform field D. A line of magnetic flux which does not follow the designed path
