3 things Volts, ohms, and amps
voltage and ground
Iron, copper wire and dry cell batteries
There are many things needed for an election. The first of these reasons being a reason for a held election.
A difference of potential (voltage) and a conductor connected to the voltage source will cause current flow. Not that you'd want to "short out" a voltage source with a piece of wire, but just the source of voltage and the conductor would permit current to flow. If you took a piece of wire and touched it to the terminals of a good battery, current would flow. It takes just those two things to create a current.
Because of the many things that appeared in a civilization that needed to be recorded.
The only two things needed for current flow are electromotive force or voltage and a conductor. The amount of current flow will depend on the "Resistance" in the circuit.
4
120 volt
There are many things
There are many things needed to climb Mount Everest. Lots of money. Experience in climbing. To be fit and healthy. See the link for a list of equipment that you also need.
To make an electromagnet, you need a coil of wire and a source of electrical current. When the electrical current flows through the wire coil, it creates a magnetic field, turning the coil into a magnet.
There are many things needed to climb Mount Everest. Lots of money. Experience in climbing. To be fit and healthy. See the link for a list of equipment that you also need.