Question
Download Solution PDFA ______ is an instrument that can detect the presence of a current in a circuit.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is galvanometer.
Key Points
- A galvanometer is an electromechanical instrument used to detect and measure small electric currents.
- It operates on the principle of converting electrical energy into mechanical energy, causing a needle to move, indicating the presence of a current.
- Galvanometers are highly sensitive and can detect even minute currents.
- They are commonly used in laboratories and for educational purposes to demonstrate the presence and direction of electric currents.
Additional Information
- Voltmeter
- A voltmeter is used to measure the electric potential difference between two points in a circuit.
- It is connected in parallel with the component across which the voltage is to be measured.
- Voltmeters can be either analog or digital.
- Sphygmomanometer
- A sphygmomanometer is an instrument used to measure blood pressure.
- It consists of an inflatable cuff, a measuring unit, and often a stethoscope.
- It is essential in medical diagnostics for monitoring cardiovascular health.
- Potentiometer
- A potentiometer is an instrument for measuring the potential (voltage) in a circuit.
- It can also function as a variable resistor, allowing the adjustment of voltage in a circuit.
- Potentiometers are widely used in applications such as volume controls and tuning circuits.
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