Chapt. 31Faraday’s Law of Induction and Inductors241b) Just for a moment let’s speak generally. What is the formula for magnitude of the magneticflux Φ for a uniform magnetic field of magnitudeBover a surface areaAperpendicular tothe magnetic field direction? Now returning to our system of interest, what is the formulavextendsinglevextendsinglevextendsinglevextendsingledΦdtvextendsinglevextendsinglevextendsinglevextendsinglefor our system in terms ofB,v, andℓ?c) What is the numerical value of the current through resistorR1and what is its direction?What is the numerical value of the current through resistorR2and 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 thebar moving at a constant velocity? This force points in the direction of motion. There are
This is the end of the preview.
access the rest of the document.