How is the working of an electric bell affected, if the alternating current is used instead of direct current? What is a device that produces AC electricity? Why does our power grid use AC electricity? What is the difference between volt and watt?
Example:If an alternating current is said to have a frequency of 3 Hz (see diagram below), that indicates its waveform repeats 3 times in 1 second. Frequency is typically used to describe electrical equipment operation. Below are some common frequency ranges: ...
An electric current always produces a magnetic field. The stronger the current, the more intense the magnetic field. A pulsating DC, or an AC, characteristically produces an electromagnetic field. This is the principle by whichwirelesssignal propagation occurs. Also see voltage,, andOhm's Law....
A time-varying electric current produces electromagnetic waves, which are used in telecommunications to broadcast data. AC vs DC Current Based on the flow of charge, the electric current is classified into two types, i.e., alternating current (AC) and direct current (DC). AC Current The flow...
The strength of that field is directly proportional to the amount of current flowing. Electrons flow through a conductor (typically a metal wire, usually copper) when two prerequisites of an electric circuit are met: The circuit includesan energy source(a battery, for instance) that produces volt...
2. With speakers, impedance is the opposition a speaker produces to the alternating current coming from the amplifier. A speaker requires more power the lower its impedance. Many speakers have an impedance between four and eight Ohms.AC, Conductance, Inductance, Power terms, Sound terms, Z...
Due to current in the armature winding, a magnetic flux is produced.Now, there are two magnetic fields inside the motor namely, main field and armature field. These two magnetic fields interact with each other and produces a torque that rotates the rotor....
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Say you have one winding (also known as a coil) which is supplied by an alternating electrical source. Thealternating currentthrough the winding produces a continually changing and alternating flux that surrounds the winding. If another winding is brought close to this winding, some portion of thi...
The alternating current (AC) is defined as a type of current that can change its direction and polarity at regular intervals of time. It differs from the direct current as the direct current moves only in a single direction. The AC is used to deliver power to buildings and offices....