Too much electric current may flow into a circuit as a result either of a fault in the cir

In an alternating current electrical system, a low system power factor is a direct sign of _____.

Lightning is a ________ of electrical current fro

Lightning is a ________ of electrical current from

When an electric current flows through a wire, a magnetic field appears around the wire.A．

According to the second rule, too much liquid in the cooker may result in______ .A．a ruine

It may safely stated______, just as the majority eat too much, so the majority sleep too m