2. One end of a conducting rod rotates with angular velocity to in a circle of...

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2. One end of a conducting rod rotates with angular velocity to in a circle of radius r making contact with a horizontal, conducting ring of the same radius. The other end of the rod is fixed. Stationary conducting wires connect the fixed end of the rod (A) and a fixed point on the ring (C) to either end of a resistance R. A uniform vertical magnetic field B- passes through the ring. (a) Find the current I flowing through the resistor. (b) What is sign of the current if positive I corresponds to flow in the direction of the arrow in the figure? (c) What torque must be applied to the rod to maintain its rotation at the constant angular rate co? B @ R I 2. One end of a conducting rod rotates with angular velocity to in a circle of radius r making contact with a horizontal, conducting ring of the same radius. The other end of the rod is fixed. Stationary conducting wires connect the fixed end of the rod (A) and a fixed point on the ring (C) to either end of a resistance R. A uniform vertical magnetic field B- passes through the ring. (a) Find the current I flowing through the resistor. (b) What is sign of the current if positive I corresponds to flow in the direction of the arrow in the figure? (c) What torque must be applied to the rod to maintain its rotation at the constant angular rate co? B @ R I

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Answer 08 E E BDB R Lur 1 BWS R 2R M sta distance x from cen... View the full answer