Magnetic Effects of Current and Magnetism-Moving Coil Galvanometer [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 4 - 7 of 13
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Question 4
Question MCQ▾
The deflection in a moving coil galvanometer is
Choices
Choice (4) | Response | |
---|---|---|
a. | Inversely proportional to the area of the coil | |
b. | Directly proportional to the number of turns in the coil | |
c. | Inversely proportional to the current flowing | |
d. | Directly proportional to the torsional constant |
Question 5
Question MCQ▾
In a moving coil galvanometer, the deflection of the coil θ is related to the electrical current i by the relation
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 6
Question MCQ▾
A solenoid of length 0.4 m and having 500 turns of wire carries a current of 3 A. A thin coil having 10 turns of wire and of radius 0.01 m carries a current of 0.4 A. The torque (in Nm) required to hold the coil in the middle of the solenoid with its axis perpendicular to the axis of the solenoid is (µ0 = 4π x 10-7 V-s/A-m)
Choices
Choice (4) | Response | |
---|---|---|
a. | 5.92 × 10-6 | |
b. | 0.592 × 10-4 | |
c. | 0.592 × 10-6 | |
d. | 59.2 × 10-6 |
Question 7
Question MCQ▾
The pole pieces of the magnet used in a pivoted coil galvanometer are
Choices
Choice (4) | Response | |
---|---|---|
a. | Plane surfaces of a horse-shoe magnet | |
b. | Cylindrical surfaces of a bar magnet | |
c. | Plane surfaces of a bar magnet | |
d. | Cylindrical surfaces of a horse-shoe magnet |