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The combination of two bar magnets makes 10 oscillations per second in an oscillation magnetometer when like pole are tied together and 2 oscillations per second when unlike poles are tied together. Find the ratio of the magnetic of the magnets. Neglect any induced magnetism.

The combination of two bar magnets makes 10 oscillations per second in an oscillation magnetometer when like pole are tied together and 2 oscillations per second when unlike poles are tied together. Find the ratio of the magnetic of the magnets. Neglect any induced magnetism.

Grade:11

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
6 years ago
Sol. B base H = 24 × 10^–6 T T base 1 = 0.1’ B = B base H – B base wire = 2.4 × 10^–6 – μ base 0/2π i/r = 24 * 10^-6 – 2 * 10^-7 *18/0.2 = (24 - 10) * 10^-6 = 14 * 10^-6 T = 2π√I/MB base H T base 1/T base 2 = √B/B base H ⇒ 0.1/T base 2 = √14 * 10^-6/24 * 10^-6 ⇒ (0.1/T base 2)^2 = 14/24 ⇒ 0.01* 14/24 ⇒ T base 2 = 0.076

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