Principles of Electricity and Electromagnetism |
From inside the book
Results 1-3 of 88
Page 121
... Resistances . - Variable resistances are generally made by suitable combinations of fixed resistances so connected that the effective resistance presented by the two terminals of the combination can be varied in appropriate steps . The ...
... Resistances . - Variable resistances are generally made by suitable combinations of fixed resistances so connected that the effective resistance presented by the two terminals of the combination can be varied in appropriate steps . The ...
Page 135
... resistance of 7 ohms , a battery of 3 ohms internal resistance , and an emf . of 15 volts . Calculate the current flowing and the rate of generation of heat in the separate elements . 7. A wire of uniform resistance r per unit length is ...
... resistance of 7 ohms , a battery of 3 ohms internal resistance , and an emf . of 15 volts . Calculate the current flowing and the rate of generation of heat in the separate elements . 7. A wire of uniform resistance r per unit length is ...
Page 136
... resistance between the terminals of a megohm resistance box in order that it shall not be in error by more than 1 per cent ? 16. How low must the junction resistances of a 0.1 - ohm shunt be in order that the total resistance the shunt ...
... resistance between the terminals of a megohm resistance box in order that it shall not be in error by more than 1 per cent ? 16. How low must the junction resistances of a 0.1 - ohm shunt be in order that the total resistance the shunt ...
Other editions - View all
Common terms and phrases
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 grad grid hence impedance induction integral ions known Laplace's equation length linear load magnetic field magnetic moment magnitude maximum measured metal meter negative obtained ohms oscillations output parallel phase plate positive potential difference potential wave potentiometer produced proportional quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation shown in Fig solenoid solution surface temperature terminals theorem torque tube unit V₁ vector velocity voltage volts wire written zero