Biot-Savart and Ampere's laws, force on a current-carrying conductor, moving-coil galvanometer, magnetic materials.
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Q1 · Magnetic Effects of Current and Magnetism · MEDIUM
A long straight wire carries a current of 10 A. At what distance (in cm) from the wire will the magnetic field be 4 × 10⁻⁵ T? (Take μ₀ = 4π × 10⁻⁷ T·m/A)
Q2 · Magnetic Effects of Current and Magnetism · MEDIUM
A long straight wire carries a current of 10 A. At what distance from the wire will the magnetic field be 2 × 10⁻⁵ T? (Take μ₀ = 4π × 10⁻⁷ T·m/A)
Q3 · Magnetic Effects of Current and Magnetism · EASY
A charged particle is projected with velocity v perpendicular to a uniform magnetic field B. If the mass of the particle is m and charge is q, what is the radius of the circular path described by the particle?
Q4 · Magnetic Effects of Current and Magnetism · HARD
A long straight wire carries a current I. A rectangular loop of dimensions a × b is placed in the same plane with its nearest edge at distance c from the wire. What is the magnetic flux through the loop?