Principles of Electricity and Electromagnetism |
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Page 31
... displaced an amount dl , the change in potential is by Eq . ( 1.6 ) -E.dl. The greatest change occurs when the vectors E and dl are parallel , i.e. , when the displacement is parallel to the field . This is the direction of the gradient ...
... displaced an amount dl , the change in potential is by Eq . ( 1.6 ) -E.dl. The greatest change occurs when the vectors E and dl are parallel , i.e. , when the displacement is parallel to the field . This is the direction of the gradient ...
Page 301
Gaylord Probasco Harnwell. on the movable coil is measured by the angular displacement of a pointer against the restoring torque of a spiral spring . If this restoring torque is proportional to the displacement , the displacement is ...
Gaylord Probasco Harnwell. on the movable coil is measured by the angular displacement of a pointer against the restoring torque of a spiral spring . If this restoring torque is proportional to the displacement , the displacement is ...
Page 578
... displacement , the dis- placement will result in a decrease in energy and the equilibrium is unstable . That is , a small displacement will bring into existence forces tending to increase the displacement . However , if this term is ...
... displacement , the dis- placement will result in a decrease in energy and the equilibrium is unstable . That is , a small displacement will bring into existence forces tending to increase the displacement . However , if this term is ...
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alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction dynamic resistance effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer grad harmonic hence impedance induction integral ions known length linear load magnetic field magnetic moment magnitude maximum measured meter negative obtained ohms oscillations output parallel phase plane plate current positive potential difference potentiometer quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation scalar shown in Fig solution surface temperature terminals theorem torque transconductance triode tube unit vacuum tube vector velocity voltage volts wave wire written zero