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Unformatted text preview: Chapt. 31 Faraday’s Law of Induction and Inductors 241 b) Just for a moment let’s speak generally. What is the formula for magnitude of the magnetic flux Φ for a uniform magnetic field of magnitude B over a surface area A perpendicular to the magnetic field direction? Now returning to our system of interest, what is the formula vextendsingle vextendsingle vextendsingle vextendsingle d Φ dt vextendsingle vextendsingle vextendsingle vextendsingle for our system in terms of B , v , and ℓ ? c) What is the numerical value of the current through resistor R 1 and what is its direction? What is the numerical value of the current through resistor R 2 and what is its direction? What is the numerical value of the current through the bar and what is its direction? Indicate the directions on the diagram. d) What is the numerical value of the total power delivered to the circuit resistance? e) What is the applied force that must be exerted on the bar by an outside source to keep the bar moving at a constant velocity? This force points in the direction of motion. There arebar moving at a constant velocity?...
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This note was uploaded on 11/16/2011 for the course PHY 2053 taught by Professor Buchler during the Fall '06 term at University of Florida.
- Fall '06