A car travels northward at 75 km/h along a straight road in a region where Earth's magnetic field has a vertical component of 0.50 * 10^-4 T.The emf induced between the left and right side, separated by 1.7 m, is:

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Quizplus · Accepted Answer

The emf (ε) induced in a conductor moving through a magnetic field is given by ε = Bvl, where B is the magnetic field strength, v is the velocity of the conductor, and l is the length of the conductor perpendicular to the direction of motion. Here, B = 0.50 × 10^-4 T, v = 75 km/h = 20.83 m/s (since 75 km/h = 75 * 1000 m / 3600 s), and l = 1.7 m. Thus, ε = 0.50 × 10^-4 T * 20.83 m/s * 1.7 m = 1.78 × 10^-3 V or 1.8 mV.

A Car Travels Northward at 75 Km/h Along a Straight