Magnetic Effects of Current & Magnetism
Biot-Savart, Ampere's law, force on a current, moving-coil galvanometer, magnetism and matter.
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Take a full mock →Q1 · Magnetic Effects of Current & Magnetism · EASY
A straight wire carries a current of 5 A. What is the magnetic field at a perpendicular distance of 10 cm from the wire? (Take μ₀ = 4π × 10⁻⁷ T·m/A)
Q2 · Magnetic Effects of Current & Magnetism · MEDIUM
A circular coil of 100 turns has a radius of 5 cm and carries a current of 2 A. What is the magnetic field at the center of the coil? (Take μ₀ = 4π × 10⁻⁷ T·m/A, π = 3.14)
Q3 · Magnetic Effects of Current & Magnetism · MEDIUM
A moving coil galvanometer has a coil of 50 turns and area 5 × 10⁻⁴ m². The magnetic field is 0.2 T and the torsional constant of the spring is 10⁻⁵ N·m/radian. What current will produce a deflection of 30 degrees?
Q4 · Magnetic Effects of Current & Magnetism · HARD
A toroidal coil has 500 turns wound uniformly over its entire length. The mean radius of the toroid is 20 cm and it carries a current of 4 A. What is the magnetic field inside the toroid at the mean radius? (Take μ₀ = 4π × 10⁻⁷ T·m/A, π = 3.14)
Q5 · Magnetic Effects of Current & Magnetism · MEDIUM
A circular coil of 100 turns and radius 5 cm carries a current of 2 A. What is the magnetic field at the center of the coil? (Take μ₀ = 4π × 10⁻⁷ T·m/A)