Something to make the electrons or other charged particles move - i.e., a voltage. Also, something through which the charged particles can move - usually a conductor. Usually a closed circuit is required.
electric current
alternating current
alternating current
An electric current flowing through a coil of wire provides the energy needed to create magnetic fields in an electromagnet.
That depends if it is an ac or dc motor.
An electric current is produced by the change in Magnetic flux over timeRead more: How_do_electromagnets_work
Too vague of a question. As long as it is a closed circuit it will flow.
To calculate the voltage needed for the electric motor, use the formula Power = Voltage x Current. Given the power (550 watts) and current (8.5 amps), rearrange the formula to solve for voltage: Voltage = Power / Current. Plugging in the values, the voltage required for the motor would be approximately 64.7 volts.
A wetting voltage is a minimum electric current needed to break through the surface film of a contact. This film occurs most in areas of high humidity, and as such wetting current is needed for systems with delicate switches.
Fusing factor is the ratio of a fuse's minimum fusing current (the smallest current that will cause the fuse to melt) and the nominal rated current (usually the number in Amps marked on the fuse body).
This may be a trick question, electrolyis of a sodium chloride solution produces chlorine at the anode but does not produce sodium at the cathode. Electrolysis of molten sodium chloride does however produce sodium and chlorine.
We can infer that current is needed to generate Electrical appliances and also to make the flow of electric circuits be completed.