(A) Sensitive galvanometer
(B) Stable galvanometer
(C) Dead beat galvanometer only
(D) Both stable or dead beat galvanometer
Tag: Physics Mcq Questions and Answers
The pole pieces of the magnet in galvanometer are made concave to make the field:
(A) Strong
(B) Weak
(C) Radial only
(D) Radial and strong
To convert a galvanometer of resistance 50 Ω and current limit 2 mA into an ammeter of range 1 ampere, the resistance required is:
(A) 25 Ω
(B) 0.1 Ω
(C) 0.2 Ω
(D) 0.05 Ω
In order to increase the range of an ammeter, the shunt resistance is:
(A) Decreased
(B) Increased
(C) Kept constant
(D) Sometimes increased and sometimes decreased
The current passing through a coil of galvanometer is given by:
(A) I = Cθ / BAN
(B) I = CθN / AB
(C) I = ANB / Cθ
(D) I = AN / BCθ
The coil of a galvanometer is suspended in a radial field so that the deflecting torque on the coil is always:
(A) NIAB cos𝛼
(B) NIAB sin𝛼
(C) NIAB tan𝛼
(D) NIAB
The magnetic field produced at a point by a current carrying straight conductor is given by:
(A) B = 𝜇oI / 2πr
(B) B = 2πr / 𝜇oI
(C) B = 2π𝜇o / Ir
(D) B = Ir / 2π𝜇o
Magnetic flux and flux density are related by:
(A) Magnetic flux = Flux density / Area
(B) Magnetic flux = Flux density x Area
(C) Flux density = Magnetic flux / area
(D) Magnetic density = Magnetic flux x Area