Need help understanding Lenz's Law

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Lenz's Law is crucial for determining the direction of induced current in response to changes in magnetic fields. In the discussed scenario, the closing of a switch increases the magnetic field, which initially led to confusion about the current direction at resistor R. The realization that the windings are in opposite directions clarified that the magnetic field for resistor R actually points to the right. Consequently, the induced current flows left when the magnetic field increases and right when it decreases. Understanding these relationships is key to applying Lenz's Law correctly.
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Homework Statement


I'm trying to find the direction of the current given certain situations, but do not know how to apply Lenz's Law. Attached a image below-
10ees9f.jpg


2. The attempt at a solution
So I figured out how each situation affects the induced current, and that the magnetic field is to the left. For a), the closing of the switch causes an increased magnetic field. If that's the case, shouldn't the current at resistor R flow to the right? The answer is left.
 
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pdf said:
So I figured out how each situation affects the induced current, and that the magnetic field is to the left. For a), the closing of the switch causes an increased magnetic field. If that's the case, shouldn't the current at resistor R flow to the right? The answer is left.
You do realize the windings are in opposite directions, yes?
 
Oh I missed that- whoops! So that means that the magnetic field for resistor R is going towards the right, therefore resulting in the current going left when the magnetic field is increased and towards the right when decreased?
 
pdf said:
Oh I missed that- whoops! So that means that the magnetic field for resistor R is going towards the right, therefore resulting in the current going left when the magnetic field is increased and towards the right when decreased?
Yes.
 
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