An EEG, or electroencephalograph
A cardiograph is an instrument designed to measure and record the electrical activity of the heart.
What instrument do we use to measure the electrical and mechanical vibrations
An electroencephalogram (EEG) is the most common instrument used to measure brain activity by recording electrical patterns in the brain. EEG is non-invasive and helps in diagnosing conditions like epilepsy, sleep disorders, and brain injuries.
An electrical ammeter.
The electrical activity of the heart.
A multimeter is a common instrument used to measure electrical current. It can measure current, voltage, and resistance in electrical circuits.
a microphone is the best answer to that!!
Frequency counter
The wattmeter is an instrument to measure the electrical power.
An Ammeter is used to measure electrical current, which is measured in Amperes (or Amps).
The electrical activity of the heart over time.
Hydrometer