Created by StemPy LabA thin non-conducting ring of radius carries a charge spread uniformly along it. It spins about its own axis with a steady angular speed . The magnetic field at the centre of the ring and the magnetic moment of the ring are
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← You have 24 identical cells, each of emf 2 V and internal resistance 1 Ω. They are to be arranged in m identical parallel rows, with n cells in series in each row, to send the largest possible current through an external resistor of 6 Ω. The best arrangement and the current it gives areA square conducting loop of side a moves to the right at a constant speed v. It passes through a region of width 2a in which there is a uniform magnetic field into the page, as shown in the figure. The loop enters the field at t = 0. Take the emf as positive when the induced current is anticlockwise. Which graph shows the induced emf ε against time, from t = 0 to t = 3a/v? →
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