What is electrovelency?

If you know the current through one resistor in a DC circuit then do you know the current through all the other resistors? What symbol represents ampere? What is the generic term for electrical device that uses and converts electrical energy into another form of energy? What is a diode fuse? Which invention delivered electricity to homes and buisnessess in the late 1800s? Is it always advisable to operate at maximum power transfer condition? Why ohms law is not applicable to semiconductor devices? Can a neutral wire trip a breaker? Why is reverse power protection required in units like signal generators? A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base junction is forward biased This transistor can be used as a power amplifier? What size breaker needs to be installed for 4500 watt 240 volt hotwater heater? What is the cause of common mode rejection ratio? What is advantage and disadvantage of impedance coupling? What are the objectives on making improvised alectric fan? Does wearing electricians boots keep you from getting shocked? Can underground electrical conduit be installed at a private beach? What value of resistor to light a LED on 230 volts? Zener Regulation with a varying load? What is the operation of FET? What part of a circuit dissipates energy?