The unit is ampere (A).
To measure the current in an electrical circuit.
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You can measure the electrical current with an amp meter. Amperage measures the current flow.
What instrument do we use to measure the electrical and mechanical vibrations
Thier electrical current will be from the solar energy converter to electricity.
Electric current is measured in amperes
To measure current you will need an ammeter.
The "produced energy" would most likely be transmitted in the form of an electrical current; you can use standard equipment to measure that. If you manage to measure the voltage, the current, and the power factor, you can multiply everything together to get the power; multiply power by time, and you get energy.
An ammeter (notice the spelling) is a tool used to measure the flow of electrical current--amps (formerly an ampere, hence the name of the ammeter).
Current is the amount of electrical charge that flows past a given point in a given time. Current is measured in Amperes, which is Coulombs per Second. Sometimes, erroneously, we use the term current to refer to voltage or power. Voltage is Joules per Coulomb. Power is Joules per Second, or Voltage times Current.
I presume you mean what do you measure electric current with. You would use an ammeter.
wattmeter