Using Lenz?s law, determine the direction of the current in resistor ab of the f

Question

Using Lenz?s law, determine the direction of the current in resistor ab of the figure when switch S is opened after having been dosed for several minutes, from point a to point b from point b to point a Part B Using Lenz's law, determine the direction of the current in resistor ab of the figure when coil B is brought closer to coil A with the switch closed from point b to point a Part C Using Lenz's law, determine the direction of the current in resistor ab of the figure when the resistance of R is decreased while the switch remains closed. from point a to point b from point b to point a

Explanation / Answer

Part A)

In A, since the current is reducing, by Lenz's Law, your fingers will wrap from front to backt and your thumb points to the left. Thus in B, your thumb will point to the right to counteract leaving the current flowing from a to b.

Part B)

Since we have a steady current flowing out of the battery and your fingers wrap from back to front, your thumb points to the right. Bringing B closer makes your thumb want to point to the left in that side. The current therefore flows from b to a

Part C)

Since the resistance is decreasing, the current is increasing cause the same result as part B. Increases B field to the right so counteract to the left and current flows from b to a

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