This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: of the four corners of a square, as shown in the diagram below. The side of the square is 2.010306 cm. The two wires through the opposite corners have identical currents, I 1 = I 2 = 6.00 A. (a) What should be the current in the third wire so that the Bfield at the fourth (empty) corner is zero? (b) What is the direction of the magnetic force on the third wire? I 3 = ? I 1 (into page) I 2 (into page) 4. Consider the circuit shown. (a) The capacitor is fully charged. (i) Calculate the currents in all resistors. (ii) What is the charge on the capacitor? switch 50 μF 10 Ω 30 Ω 9 V 20 Ω 40 ω (b) After fully charging the capacitor, the switch S is now opened. After how long from the moment the switch is opened will the charge on the capacitor be equal to ¼ of its initial value?...
View
Full Document
 Winter '09
 Re
 Magnetic Field, Electric charge, Fundamental physics concepts, positive point charge, Virtual Midterm Exam

Click to edit the document details