## Principles of Electricity and Electromagnetism |

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Page 321

The disk D is rotated by

second is measured stroboscopically . The two coils A and A ' symmetrically

placed on either side of the disk carry a current i which produces an axial field ...

The disk D is rotated by

**means**of the motor M and v , the number of rotations persecond is measured stroboscopically . The two coils A and A ' symmetrically

placed on either side of the disk carry a current i which produces an axial field ...

Page 326

9 the coil is suspended by

smaller restoring torque than the spiral spring used in the pivot type of instrument

. The current enters and leaves the coil by

9 the coil is suspended by

**means**of a fine phosphor - bronze fiber which exerts asmaller restoring torque than the spiral spring used in the pivot type of instrument

. The current enters and leaves the coil by

**means**of this fiber and a loose helix ...Page 367

Si and S are closed and the magnetizing current , ii , adjusted to the desired

maximum value for the loop by

current are made at intervals of a few seconds by

has ...

Si and S are closed and the magnetizing current , ii , adjusted to the desired

maximum value for the loop by

**means**of Ri . Then 20 or 30 reversals of thecurrent are made at intervals of a few seconds by

**means**of S , until the specimenhas ...

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angle applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance respect result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero