A metal blade of length L = 60 cm spins at a constant rate of 15 rad/s about an axis that is perpendicular to the blade and through its center. A uniform magnetic field B = 4 mT is perpendicular to the plane of rotation. What is the magnitude of the potential difference between the center of the blade and either of its ends?

Question

Quizplus · Accepted Answer

The potential difference (emf) induced across the blade can be calculated using the formula emf = (1/2) * B * ω * L^2. Substituting the given values: B = 4 mT = 4 x 10^-3 T, ω = 15 rad/s, and L = 0.6 m, we get emf = (1/2) * 4 x 10^-3 * 15 * (0.6)^2 = 2.7 mV.

A Metal Blade of Length L = 60 Cm Spins