## Principles of Electricity and Electromagnetism |

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Page 128

difference across the condenser is

fundamental circuit theorem Vc + Vr = 0 since no emf . is present . Vo is equal to g

/ C and VR = ir ( i = da / dt ) , where q is the charge on the condenser at a time t .

difference across the condenser is

**measured**with an electrometer and by thefundamental circuit theorem Vc + Vr = 0 since no emf . is present . Vo is equal to g

/ C and VR = ir ( i = da / dt ) , where q is the charge on the condenser at a time t .

Page 134

box , of course , draws a current from the external circuit and hence is not

adapted to the

potentiometer and a standard resistance . The circuit is shown at the right in Fig .

4 . 23 .

box , of course , draws a current from the external circuit and hence is not

adapted to the

**measurement**of emfs . An ammeter can be calibrated with apotentiometer and a standard resistance . The circuit is shown at the right in Fig .

4 . 23 .

Page 191

00000 This quantity n would be difficult to

drawn from the surface is equal to n times e , the electronic charge times the

average velocity of an electron in the vapor . Since the average kinetic energy is

...

00000 This quantity n would be difficult to

**measure**, but the current which can bedrawn from the surface is equal to n times e , the electronic charge times the

average velocity of an electron in the vapor . Since the average kinetic energy is

...

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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