Advertisements
Advertisements
प्रश्न
Define the current sensitivity of a galvanometer ?
Advertisements
उत्तर
Current sensitivity of a galvanometer is defined as the deflection in galvanometer per unit current.
APPEARS IN
संबंधित प्रश्न
A circular coil of 250 turns and diameter 18 cm carries a current of 12A. What is the magnitude of magnetic moment associated with the coil?
A galvanometer of resistance G is converted into a voltmeter to measure upto V volts by connecting a resistance R1 in series with the coil. If a resistance R2 is connected in series with it, then it can measures upto V/2 volts. Find the resistance, in terms of R1 and R2, required to be connected to convert it into a voltmeter that can read upto 2 V. Also find the resistance G of the galvanometer in terms of R1 and R2
Draw a labelled diagram of a moving coil galvanometer. Describe briefly its principle and working.
Why is it necessary to introduce a radial magnetic field inside the coil of a galvanometer?
What are the advantages of using soft iron as a core, instead of steel, in the coils of galvanometers?
Define the term ‘current sensitivity’ of a moving coil galvanometer.
In an ammeter 0.5% of main current passes through galvanometer; If resistance of galvanometer is G, the resistance of ammeter will be.
A galvanometer having a resistance of 20 Ω and 30 Ω division on both sides has figure of merit 0.005 ampere/division. The resistance that should be connected in series such that it can be used as a voltmeter upto 15 volt, is ______.
