हिंदी

Define current sensitivity of a galvanometer. - Physics

Advertisements
Advertisements

प्रश्न

Define current sensitivity of a galvanometer.

टिप्पणी लिखिए

उत्तर

Current sensitivity of a galvanometer is defined as the deflection produced in the galvanometer when a unit current flows through it.

θ = `("nBA")/"k""I"`

So, for a given value of I, θ will be large if `("nBA")/"k"` is large i.e n, B and A should be large and k should be small.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2015-2016 (March) Foreign Set 2

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

A rectangular coil of a moving coil galvanometer contains 100 turns, each having area
15 cm2. It is suspended in the radial magnetic field 0.03 T. The twist constant of suspension
fibre is 15 x 10-10 N-m/degree. Calculate the sensitivity of the moving coil galvanometer.


A galvanometer has a resistance of 16Ω. It shows full scale deflection, when a current of 20 mA is passed through it. The only shunt resistance available is 0.06  which is not appropriate to convert a galvanometer into an ammeter. How much resistance should be connected in series with the coil of galvanometer, so that the range of ammeter is 8 A?


Define the current sensitivity of a galvanometer ?


Why are the pole pieces of a horseshoe magnet in a moving coil galvanometer made cylinder in shape? 


A moving coil galvanometer has a coil of resistance 59 Ω. It shows a full-scale deflection for a current of 50 mA. How will you convert it to an ammeter having a range of 0 to 3A?


Explain the significance of a radial magnetic field when a current-carrying coil is kept in it. 


To make the field radial in a moving coil galvanometer ______.

A galvanometer of resistance 100 Ω gives a full-scale deflection for a current of 10−5 A. To convert it into an ammeter capable of measuring up to 1 A we should connect a resistance of ______.


A multirange voltmeter can be constructed by using a galvanometer circuit as shown in figure. We want to construct a voltmeter that can measure 2V, 20V and 200V using a galvanometer of resistance 10Ω and that produces maximum deflection for current of 1 mA. Find R1, R2 and R3 that have to be used.


How is current sensitivity increased?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×