galvanometer

mcqspedia.com has 5 Question/Answers about Topic galvanometer

In moving coil galvanometer, pole faces of U-shaped magnet are made concave

In moving coil galvanometer, pole faces of U-shaped magnet are made concave
  • A. to make field radial
  • B. to increase field
  • C. to weaken field
  • D. both a and b
  • Correct Answer: Option A

Electric instrument used to measure current in amperes is known as

Electric instrument used to measure current in amperes is known as
  • A. ammeter
  • B. voltmeter
  • C. ohm meter
  • D. odometer
  • Correct Answer: Option A

A galvanometer of 50 Ω gives full scale deflection with 2 mA current. To convert it into ammeter, range of 10 A is connected with it, shunt resistance should be

A galvanometer of 50 Ω gives full scale deflection with 2 mA current. To convert it into ammeter, range of 10 A is connected with it, shunt resistance should be
  • A. 0.1 Ω
  • B. 0.2 Ω
  • C. 0.01 Ω
  • D. 0.02 Ω
  • Correct Answer: Option C

Device used to measure potential difference between two points in volts is known as

Device used to measure potential difference between two points in volts is known as
  • A. ohmmeter
  • B. odometer
  • C. ammeter
  • D. voltmeter
  • Correct Answer: Option D

In order to increase range of ammeter, value of shunt resistance Rs is

In order to increase range of ammeter, value of shunt resistance Rs is
  • A. increased
  • B. decreased
  • C. remain
  • D. both a and b
  • Correct Answer: Option B