Mell What causes the current to flow in a conductor?
When an electric current flows in a conductor, it flows as a drift of free electrons in the metal. Electricity flows easily through a conductor because the electrons are free to move around in the object. Whenever there is a movement of electrons through a conductor, an electric current is created.
How does a conductor affect the flow of current?
Conductors and insulators are both important in the field of electronics. Electrical conductors allow electric current to flow easily because of the make up of their atoms. In a conductor, the outer electrons of the atom are loosely bound and can freely move through the material when an electric charge is applied.
What is required for current flow?
In order for a current to flow, the circuit must be closed; in other words, there must be an uninterrupted path from the power source, through the circuit, then back to the power source. Voltage is sometimes called electric potential and is measured in volts.
What makes the current flow through a conductor?
The force required to make current flow through a conductor is called voltage and potential is the other term of voltage. For example, the first element has more positive charges, so it has higher potential. On the other hand, the second element has charges that are more negative so it has lower potential.
When do oscillating electric currents flow at the correct voltage?
When oscillating electric currents flow at the correct voltages within radio antennas, radio waves are generated.
How are conductors and insulators related to electron flow?
It must be understood that not all conductive materials have the same level of conductivity, and not all insulators are equally resistant to electron motion.
How are magnetic fields used to generate electric currents?
Magnetic fields can also be used to make electric currents. When a changing magnetic field is applied to a conductor, an electromotive force (EMF) is induced, which starts an electric current, when there is a suitable path. When an electric current flows in a suitably shaped conductor at radio frequencies, radio waves can be generated.