Biot-Savart law, Ampère's law, magnetic dipole, Earth's magnetism.
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Q1 · Magnetic Effects of Current and Magnetism · EASY
A 2 C charge moves at 10 m/s perpendicular to a uniform magnetic field of 0.5 T. The magnetic force on it is:
Q2 · Magnetic Effects of Current and Magnetism · EASY
Magnetic field at a perpendicular distance r from a long, straight wire carrying current I is:
Q3 · Magnetic Effects of Current and Magnetism · EASY
A current loop of area A carries current I. Its magnetic dipole moment is:
Q4 · Magnetic Effects of Current and Magnetism · MEDIUM
A circular coil of radius 10 cm has 50 turns and carries a current of 2 A. What is the magnetic field at the centre of the coil? (Given: μ₀ = 4π × 10⁻⁷ T·m/A)
Q5 · Magnetic Effects of Current and Magnetism · EASY
At a certain place on Earth's surface, the horizontal component of Earth's magnetic field is 3 × 10⁻⁵ T and the angle of dip is 30°. What is the vertical component of Earth's magnetic field at that place?