Q7. If you were to move the north pole of a bar magnet into the front of your coil, what is the direction of the induced current when viewed from the front? To reach your conclusion, answer each of the following (see next page):

36. How many turns must be wound on a flat, circular coil of radius 20 cm in order to produce a magnetic field of magnitude 4.0 x 10-5T at the center of the coil when the current through it is 0.85 A? 38. A circular loop of radius R carries a current I. At what distance along the axis of the loop is the magnetic field one-half its value at the center of the loop?

1. A square loop of wire is pulled upward out of the space between the poles of a magnet, as shown in Figure 21.350. As this is done, the current induced in this loop, as viewed from the N pole of the magnet, will be A. directed clockwise. B. directed counterclockwise. C. zero. Figure 21.35 Multiple-Choice Problem 10. S N

A = 60 B = 70 C = 170 D = 7

3. A strong bar magnet, near a solenoid, is moving to the left at constant speed i. a) What is the direction of the conventional current through the resistor? Clearly explain. b) Find the direction of the force acting on the magnet due to the induced current. Clearly explain. В S N а

Please solve and answer the questions correctly. Thanks you!!

1a. Select the best answer and explain why each of the wrong answers are incorrect. Which of the following configurations would allow for a maximum induced current through a 1m segment of wire in the presence of a changing magnetic field? (a) a single circular loop (b) a single square loop (c) a 5-turn circular loop (d) a 5-turn square loop   2a. An electric generator utilizes the principle of magnetic induction to generate a DC current. To do this, a wire loop is rotated relative to a hard magnet so that the magnetic flux through the loop is constantly changing (see the diagram below). However, this process is slightly flawed to produce a constant DC current that always moves in the same direction. Explain why this is flawed.

6. Two moving rods of equal lengths (1.30 m) are moving as shown in the figure. The speed v₁ = 1.10 m/s and the speed V₂ = 1.40 m/s. If the magnetic field is uniform with a magnitude of 0.90 T, what is the magnitude of the average emf in the loop? What is the direction of the induced current in the circuit? O V Counterclockwise None of these Clockwise

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3. Induced Forces: Two conducting coils are arranged parallel to each other. The first coil is connected to a power supply so that the current is in at the top and out at the bottom. The voltage on the power supply is being decreased. a. What is the direction (left/right/zero) of the magnetic field (due to the first coil) as it goes through the 2nd coil? b. Is the magnetic flux increasing or decreasing? C. What is the direction of the induced magnetic field through the 2nd coil required to resist the change in magnetic flux? f. g. d. What is the direction (in at top/out at bottom or out at top/in at bottom) of the induced current in the 2nd coil required to produce the induced field needed? e. What is true of the magnetic force between the two coils? The coils will attract each other. The coils will repel each other. There is no magnetic force between the coils. What is the direction of the induced current in the 2nd coil if the voltage of the power supply for the first coil is…