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प्रश्न
How is a galvanometer converted into
- an ammeter and
- a voltmeter?
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उत्तर
- A galvanometer can be converted into an ammeter of a given range by connecting of suitable low resistance S called shunt in parallel to the galvanometer.
- A galvanometer can be converted into suitable high resistance. Rh in series with the given galvanometer.
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संबंधित प्रश्न
Deduce the relation for the magnetic induction at a point due to an infinitely long straight conductor carrying current.
Discuss the conversion of galvanometer into an ammeter and also a voltmeter.
A tightly wound 100 turns coil of radius 10 cm carries a current of 7 A. The magnitude of the magnetic field at the centre of the coil is ______.
(Take permeability of free space as 4π × 10−7 SI unit).
To apply the Biot–Savart law to a wire XY carrying current I, the wire is broken into extremely small pieces called:
Which set of proportionalities correctly describes how the magnitude dB of the magnetic field contribution depends on the current I, the element length dl, the angle θ, and the distance r?
The constant μ₀ is called the ______ of free space, and its exact value in SI units is:
In the comparison between Coulomb's law (electric field) and the Biot–Savart law (magnetic field), the source of the field is:
Which distance dependence do the electric field (Coulomb's law) and the magnetic field (Biot–Savart law) share?
Which relationship correctly links the permeability of free space, the permittivity of free space, and the speed of light?
For a current distributed through a volume (rather than a thin wire), the Biot–Savart law is rewritten using the current density j = I/A, where:
