## Principles of Electricity and Electromagnetism |

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Page 42

Gl

line charge of density qu is - = . 1– " " 2.Tror (*) A circular disk of radius R is

charged to a uniform surface density q.

the ...

Gl

**Show**by direct integration that the electric field at a distance r from an infiniteline charge of density qu is - = . 1– " " 2.Tror (*) A circular disk of radius R is

charged to a uniform surface density q.

**Show**that the electric field on the axis ofthe ...

Page 101

0.736 mm. per second for a current density of 10 amp. per square millimeter if

one conduction electron is assumed per atom. (Number of copper atoms per

cubic ...

**Show**that the average velocity of drift of the conduction electrons in copper is0.736 mm. per second for a current density of 10 amp. per square millimeter if

one conduction electron is assumed per atom. (Number of copper atoms per

cubic ...

Page 307

that which would be produced by a current ni flowing along the axis of symmetry

of the toroid. 12.

...

**Show**that the field inside a toriod of n turns carrying a current i is the same asthat which would be produced by a current ni flowing along the axis of symmetry

of the toroid. 12.

**Show**that the magnetic induction in webers per square meter at...

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alternating current alternating-current amplitude angle angular velocity anode antenna applied approximately armature assumed atom axis calculated capacity cathode centimeter characteristic circuit coefficient coil component condenser conducting conductor considered curl current flowing curve deflection density determined dielectric constant direct-current direction discharge displacement distance effective electric field electromotive force electrons electrostatic element energy equal equation ferromagnetic flux force frequency function galvanometer given grad grid hence hysteresis impedance induction integral ions known Laplace's equation linear load magnetic field magnetic moment magnitude maximum measured meter motor negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potentiometer produced proportional quantity radiation radius ratio reactance region represents resistance resonant rotation Show shown in Fig solenoid solution substance surface temperature terminals theorem torque transformer tube unit vector voltage volts wave wire written zero