52 v 49 v Write a matrix equation that determines the loop currents shown to the right. la 40 30 30 50 (15 30 (13 3a 40 3a { 3a 31'v 26v
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- In the circuit below R1 = 20 and R2 = 9. Find the values of the unknown current and the battery voltages. Show your work clearly. The equations are easy to solve so I expect actual values for the answer. (Do not simplify the circuit) (Put the value of €2 in the answer box.) 81 62 0.1 A R1Q 0.175 A V R2 0 Answer:Please make sure to justify and show your procedure with each step. Please make sure to answer all the questions.Please answer part D.
- I have a parallel-plate capacitor consisting of two square plates 10cm on a side with a separation of 1mm. It is connected to a 6V battery and fully charged. Initially the space between the capacitor plates is empty. How much work would take to insert a slab of dielectric with K=3 that will fill the space between the plates? Show your work. E0 = 8.85x10^-12 F/mSolve part c of the image, include all the procedures to arrive at the result. What If? After a very long time, switch S1 is also closed. By what amount does the charge on the second capacitor change after S1 has been closed for a very long time? (Give your answer in µC.)K=2
- Two straight wires carrying current are fixed at the locations shown in the figure below. Three field points (labeled A, B, and C) are also indicated in the figure. Sketch a vector diagram of magnetic fields produced at points A, B, and C in the corresponding boxes below. In each case, sketch the individual magnetic field vectors produced by each current, as well as the net magnetic field. Be sure to label your vectors clearly. (If one of the vectors is zero, explicitly say so.) Calculate the net magnetic field at point C. Express your answer in vector form.A circular loop of wire sits face on to a 2-tesla magnetic field that points into the page, as shown in the upper diagram at right. The wire loop is turned a quarter turn by a crank, so that the right edge of the loop drops into the page and the left side of the loop comes out of the page. The radius of the loop is 20 cm and the quarter turn takes 0.5 seconds. a) What is the average emf induced in the loop, and does the cur- rent in the wire flow in the direction of the arrow on the loop or in the opposite direction? b) If the crank continues to turn the loop another quarter turn in 0.5 seconds in the same direction, until it looks like the bottom picture, what will be the average emf induced in the wire, and does the current in the wire flow in the direction of the arrow or in the opposite direction? 8 e & 80 8The current in the central branch of the circuit below (I3) is 2A. Use Kirchoff's rules to find the current flowing around the boundary of the upper loop (I1).