Advertisements
Advertisements
प्रश्न
The figure below shows a circuit containing an ammeter A, a galvanometer G and a plug key K. When the key is closed:
पर्याय
both G and A show deflections.
neither G nor A shows deflection.
G shows deflection but A does not.
A shows deflection but G does not.
Advertisements
उत्तर
A shows deflection but G does not.
APPEARS IN
संबंधित प्रश्न
Show that the current flowing through a moving coil galvanometer is directly proportional to the angle of deflection of coil.
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?
With the help of a neat and labelled diagram, explain the principle and working of a moving coil galvanometer ?
Figure shows two circuits each having a galvanometer and a battery of 3V.
When the galvanometers in each arrangement do not show any deflection, obtain the ratio R1/R2.
State how a moving coil galvanometer can be converted into an ammeter.
Define the term ‘current sensitivity’ of a moving coil galvanometer.
The AC voltage across a resistance can be measured using a ______.
The conversion of a moving coil galvanometer into a voltmeter is done by ______.
Assertion (A): On Increasing the current sensitivity of a galvanometer by increasing the number of turns may not necessarily increase its voltage sensitivity.
Reason (R): The resistance of the coil of the galvanometer increases on increasing the number of turns.
Select the most appropriate answer from the options given below:
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 ______.
