Categories
Physics

A galvanometer is converted into an voltmeter by connecting a suitable

  • low resistance in series
  • Low resistance in
    series
  • High resistance in
    parallel
  • High resistance in
    series
Categories
Physics

A galvanometer is converted into an ammeter by connecting a suitable

  • High Resistance in series
  • Low resistance in
    series
  • High resistance in
    parallel
  • Low resistance in
    parallel
Categories
Physics

Voltmeter is used to measur

  • temperature
  • resistance
  • current
  • Potential
    ddifference
Categories
Physics

The sensitivity of a galvanometer can be increased by decreasing

  • Area of coil
  • Magnetic field
  • Number of turns
  • Suspension
    coefficient
Categories
Physics

Which of the following apparatus is used to measure current, voltage and resistance

  • ohmmeter
  • ammeter
  • voltmeter
  • AVO meter
Categories
Physics

The sensitivity of a galvanometer can be increased if the factor c/BAN

  • Becomes zero
  • Remains same
  • increases
  • Decreases
Categories
Physics

The sensitivity of a galvanometer is given by

  • BAN/C
  • 1/CBAN
  • CBAN
  • C/BAN
Categories
Physics

The relation between current I and the angle of deflection in a moving coil galvanometer is

  • I α 1/θ
  • I α cosθ
  • I α sinθ
  • I α θ
Categories
Physics

The coil is situated in the magnetic field such that the plane of the coil is always

  • At 60o to field
  • At 45o to field
  • Perpendicular
  • Parallel to field
Categories
Physics

The coil of galvanometer is suspended in a radial magnetic field so that the deflecting torque on the coil is

  • τ =NIABtanα
  • τ =NIABcosα
  • τ =NIABsinα
  • τ =NIAB