Well, first of all, voltage is not carried. Voltage is the 'pressure' between the ends of a circuit that makes charges want to flow. The charge carriers that actually do the physical flowing are the electrons, with their negative charges. When they flow, we say that there is 'current' in the conductor.
The energy carried by each unit of current is called electric potential or voltage.
The energy carried by an electric current depends on a conductor in order to flow. an Insulator disrupts the flow
in BJT forwardbiasing & reverse biasing are carried out but in FET voltage divider biasing &self biasing are carried out.
The call being made or received with VoIP is carried over the Internet. If you call a phone that is using PSTN (Public Switched Telephone Network) then they are not using the Internet for the voice transmissions. All calls made from VoIP though are indeed Internet.
The energy supplied by a power line is determined by its load, not by its voltage. For a given energy demand by its load, the higher the liine's voltage, the lower the resulting load current.
The telephone call has been transmitted over data networks/internet.
VoIP - Voice over IP. this is just a guess but I would assume that it is because you need a Internet connection to use it.
High voltage testing is performed to confirm the integrity of a cable's insulation. It is always carried out after a new cable has been installed and terminated, or whenever a new joint is installed.
Electricity energy is carried around a circuit by the flow of electric charge, typically carried by electrons within a conductor such as a wire. When a voltage is applied, electrons are pushed through the circuit, creating a current that carries the energy from the power source to the load.
Check the internet for a voltage drop calculator.
There are many guides on the internet for building a high voltage power supply. The average cost for building one of these power supplies is around $20.