Advertisements
Advertisements
Question
The figure below shows a circuit containing an ammeter A, a galvanometer G and a plug key K. When the key is closed:

Options
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
Solution
A shows deflection but G does not.
APPEARS IN
RELATED QUESTIONS
Show that the current flowing through a moving coil galvanometer is directly proportional to the angle of deflection of coil.
An ideal voltmeter has _______.
(A) low resistance
(b) high resistance
(C) infinite resistance
(D) zero resistance
Why is it necessary to introduce a cylindrical soft iron core inside the coil of a galvanometer?
Define current sensitivity of a galvanometer.
Explain the significance of a radial magnetic field when a current-carrying coil is kept in it.
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 ______.
A voltmeter has a range of 0 - 20 V and a resistance of 500 Q. Explain how can be used to measure voltages from 0 - 200 volt?
A moving coil galvanometer of resistance 55 Ω produces a full scale deflection for a current of 250 mA. How will you convert it into an ammeter with a range of 0 - 3A?
