Advertisements
Advertisements
प्रश्न
Why is it necessary to introduce a radial magnetic field inside the coil of a galvanometer?
उत्तर
A radial magnetic field is necessary so that plane of the coil in all positions remain parallel to the direction of magnetic field
APPEARS IN
संबंधित प्रश्न
Write the underlying principle of a moving coil galvanometer.
Draw a labelled diagram of a moving coil galvanometer. Describe briefly its principle and working.
Why is it necessary to introduce a cylindrical soft iron core inside the coil of a 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?
State the principle of the working of a moving coil galvanometer, giving its labeled diagram ?
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.
The AC voltage across a resistance can be measured using a ______.
A moving coil galvanometer can be converted into an ammeter by ______.
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 ______.
