en ussre di Fall 17 c ho re Name est 2 PHY202 8. A serial RC circuit is charged
ID: 1785911 • Letter: E
Question
en ussre di Fall 17 c ho re Name est 2 PHY202 8. A serial RC circuit is charged to an unknown voltage V. With R 100, C 0.01F, the voltage reaches 0.5V after a time of 0.05s. What is V? 9. A solenoid with 100 turns per meter carries a current of 10A. A small square coil of side length 1mm has 10 turns, carries 1A and sits inside the solenoid as shown below. What is the torque on the small coil? 1mm = 10, coll = 1A nsolenold 100 soleneld 10A 10. Draw the direction of the magnetic field at point A for each of the cases below. The m agnitude of the current in the wires is equal Page 5 of 8Explanation / Answer
8) We know in charging of a capacitor, V = V0 * (1 - e^(-t/RC))
0.5 = V0*(1- e^(-0.05/(10*0.01)))
0.5 = V0 * 0.393
V0 = 0.5/0.393
= 1.272 V answer
Hence Vx = 1.272 V answer
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