microphone
An ammeter is a device that indicates the presence of an electric current by measuring the flow of electric charges through a circuit.
A device that changes the direction of the current is called a "switch" or a "reversing switch." This device allows for the current to flow in different directions as needed.
ammeter, which is understood as an amp meter
A galvanometer is a device that uses an electromagnet to measure electric current. It works by converting the current passing through it into a proportional mechanical deflection of a pointer on a scale.
An electrometer is a device that detects electric charges by measuring the voltage or current associated with the charges.
The telephone does that!
A fuse is the simplest protective device for over current in an electric circuit.
An ammeter is a device that indicates the presence of an electric current by measuring the flow of electric charges through a circuit.
A device that changes the direction of the current is called a "switch" or a "reversing switch." This device allows for the current to flow in different directions as needed.
An electric motor, an electric fan
ammeter, which is understood as an amp meter
electric genarator
An electronic device uses electric to represent coded information. Variations in the current are converted to codes used by the electronic device.
ammeter
An ammeter is a device that measures the strength of an electric current. It is usually connected in series with the circuit where the current is to be measured and provides a reading in units of amperes.
Nothing can change electric current to voltage. You can compare "current " to rate of flow, while "voltage" is the energy level. Transformers can be used to increase or decrease the voltages of alternating current as is done from 'street power' to domestic power.
An electric motor is the best for that job.