Question

What is a galvanometer ? Don't spam !!!

Answer 1

A galvanometer is an electromechanical instrument used for detecting and indicating an electric current. A galvanometer works as an actuator, by producing a rotary deflection of a pointer, in response to electric current flowing through a coil in a constant magnetic field.

Answer 2

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An instrument for detecting and measuring small electric currents.

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➡️ Advantages and disadvantages of a moving Coil Galvanometer :

☃️ Advantages ☃️

• High sensitivity.
• Not easily affected by stray magnetic fields.
• The torque to weight ratio is high.
• High accuracy and reliability.

☃️ Disadvantages ☃️

• It can be used only to measure direct currents.
• Develops errors due to factors like aging of the instrument, permanent magnets and damage of spring due to mechanism stress.

Look at the attachment to know how a galvanometer looks like !!!

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