हिंदी

Define current sensitivity of a galvanometer. - Physics

Advertisements
Advertisements

प्रश्न

Define current sensitivity of a galvanometer.

टिप्पणी लिखिए
Advertisements

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

The combined resistance of a galvanometer of resistance 500Ω and its shunt is 21Ω. Calculate the value of shunt.


Write the underlying principle of a moving coil galvanometer.


A moving coil galvanometer has a resistance of 25Ω and gives a full scale deflection for a current of 10mA. How will you convert it into a voltmeter having range 0 - 100 V?


How will you convert a moving coil galvanometer into a voltmeter?


Define the current sensitivity of a galvanometer ?


State the underlying principle of working of a moving coil galvanometer. Write two reasons why a galvanometer can not be used as such to measure current in a given circuit. Name any two factors on which the current sensitivity of a galvanometer depends.


A galvanometer coil has a resistance of 12 Ω and the metre shows full scale deflection for a current of 3 mA. How will you convert the metre into a voltmeter of range 0 to 18 V?


A galvanometer coil has a resistance of 15 Ω and the metre shows full scale deflection for a current of 4 mA. How will you convert the metre into an ammeter of range 0 to 6 A?


In a moving coil galvanometer, the deflection of the coil θ is related to the elecrical current i by the relation ______.

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.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×