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Is BJT is a current control device or voltage control device?
transistor is a current controlled device. as the current flows through the base of the transistor , it works like a close switch.
What is a sentence with the word electric current in it?
The electric light bulb would not turn on because it was burnt out.
Electric current changes direction repeatedly is called?
AC current (alternating current) like in a wall outlet
What name is given to the property of metals that allows electricity to pass through it?
I believe its a conductor, because an insallator is like a stirofoam cup for example, as it keeps the heat in the cup without burning your hands. An example of a conductor is a piece of metal because it is able to pass an electric current through the metal.
What is the phase angle between voltage and current in a purely capacitive circuit?
Current leads voltage (or voltage lags current) by 90° in a purely capacitive circuit. Try to remember it this way: capacitors resist change in voltage, hence the voltage lags (they resist voltage change because the voltage first goes to charging up the electric field in the capacitor).Inductors resist change in current (energy in an inductor is in the form of magnetic fields, which are caused by the current through the wire). Remember an inductor is a coil (like an electromagnet, or a transformer).
