## Principles of Electricity and Electromagnetism |

### From inside the book

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Page 121

Very high

drawing an India-ink line on good-quality paper, though these are generally

unreliable even for short periods. More satisfactory

be ...

Very high

**resistances**in the range from 107 to 1013 ohms can be made bydrawing an India-ink line on good-quality paper, though these are generally

unreliable even for short periods. More satisfactory

**resistances**in this range canbe ...

Page 135

Three

the group placed in series with a

internal

rate ...

Three

**resistances**of 1, 3, and 5 ohms, respectively, are connected in parallel andthe group placed in series with a

**resistance**of 7 ohms, a battery of 3 ohmsinternal

**resistance**, and an emf. of 15 volts. Calculate the current flowing and therate ...

Page 136

E and internal

and the wheel of Prob. 12. Assuming that the relay operates at a current i, how

many cells must be placed in series for the relay to be closed during half a

revolution ...

E and internal

**resistance**R, is connected in series with a relay of**resistance**R,and the wheel of Prob. 12. Assuming that the relay operates at a current i, how

many cells must be placed in series for the relay to be closed during half a

revolution ...

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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 discharge effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer given grid hence impedance induction integral ions known Laplace's equation length linear load magnetic field magnetic induction magnitude maximum measured metal meter negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potential wave potentiometer produced proportional quantities radiation radius ratio reactance region represents resistance resonant rotation scalar Show shown in Fig solenoid solution surface temperature terminals theorem torque tube unit vector velocity voltage volts wire written zero