Question

3. Given the illustration below for a series of bar magnets and loops, for each diagram: A. Label the magnet poles B. Indicate the direction of the induced current I in the loop (none, clor cel) C. Indicate the direction of the induced magnetic field Bind (up or down) D. Identify if the magnetic flux is increasing or decreasing. Some details are given for guidance (20 pts total) Lenz's Law Magnet stationary . constant 4. A coil is connected in series with a 10 k resistor. An ideal 50 V battery is applied across the two devices and the current reaches a value of 2 mA after 5 ms. Calculate: A. The time constant of the circuit. (10 pts) B. The inductance L of the coil. (10 pts)

Answer 1

Date I 4) The nuynetic poles are shown in dig. ↑ B) Direction of indired uverent a) no current b) counter c) clockwise clockwise c) Direction of induced magnetic field a no induction 1) up c) down D Magnetic flux a) constant increasing g) decreasing

most 1 loker y=50r V=50V Toxos Imax= x = 50 - 5mA I = 2mA t= 5ms Ta time constant = ? We know I. Io fi- ett in RL circuit 2:10-3- 581013 (= 2 5810375) 2 el-esxio-3/2 25*10*2. La esxoles 5x109In cost Itu 10ms/

Z= L L=ER | = 10x10 -3 elox 103 - loolt ILE 100H

Please refer to the attached images for detailed calculations

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