## Principles of Electricity and Electromagnetism |

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Page 73

If the bubble is raised to a potential V by being touched with a wire from a static

machine, show that the radius of the bubble increases to r, where r is

Pro – a +4T,” – a – to /* 2 4. In the discussion of the quadrant electrometer in the ...

If the bubble is raised to a potential V by being touched with a wire from a static

machine, show that the radius of the bubble increases to r, where r is

**given**by tPro – a +4T,” – a – to /* 2 4. In the discussion of the quadrant electrometer in the ...

Page 74

The electrostatic torque is opposed by the restorin torque of a fiber which is

by kb, where 6 is the angle of entry of the plates. If is the distance from a fixed to a

movable plate and V is the potential differenc between the two sets, show that ...

The electrostatic torque is opposed by the restorin torque of a fiber which is

**given**by kb, where 6 is the angle of entry of the plates. If is the distance from a fixed to a

movable plate and V is the potential differenc between the two sets, show that ...

Page 308

Show that the torque on an elementary whirl of current i having an area a (

moment m = usia) in a magnetic field H is

such an elementary circuit can be written (m grad) H by which is meant the vector

...

Show that the torque on an elementary whirl of current i having an area a (

moment m = usia) in a magnetic field H is

**given**by m X H. Show that the force onsuch an elementary circuit can be written (m grad) H by which is meant the vector

...

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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