Direction of current in smaller loop on the left and on the right

In summary, the direction of current in a smaller loop on the left is counterclockwise and is determined by the right-hand rule. It can change depending on external factors. On the other hand, the direction of current in a smaller loop on the right is opposite and can also change depending on external factors.
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Jenny Physics
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Homework Statement
Consider a large circular loop of current such that the magnetic field on its axis points in the positive direction. Imagine another much smaller circular loop lying parallel to the larger one and to the left of it. What is the direction of the induced current? If the smaller loop lies to the right of the larger loop will the induced current be in the same direction?
Relevant Equations
Lenz Law
Lets say the current in the larger loop is counterclockwise. Then it doesn't matter if the smaller loop is to the right or to the left of the larger one, the induced current in it will always be clockwise. The magnetic field due to the smaller loop current always points in the negative direction. Or will the direction of the current change?
 
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The answer depends on whether the current in the larger loop is increasing, decreasing or staying the same as well as on whether it is clockwise or counterclockwise.
 
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FAQ: Direction of current in smaller loop on the left and on the right

1. What is the direction of the current in a smaller loop on the left and on the right?

The direction of the current in a smaller loop on the left and on the right is determined by the right-hand rule. This means that if you point your right thumb in the direction of the current in the larger loop, your fingers will curl in the direction of the current in the smaller loop. This rule applies to both the left and right sides of the larger loop.

2. Does the direction of the current in the smaller loop affect the overall magnetic field?

Yes, the direction of the current in the smaller loop does affect the overall magnetic field. The smaller loop creates its own magnetic field that interacts with the larger loop's magnetic field. The direction of the current in the smaller loop will determine the direction and strength of this interaction.

3. How does the direction of the current in the smaller loop affect the induced current in the larger loop?

The direction of the current in the smaller loop can affect the induced current in the larger loop through the principle of electromagnetic induction. If the current in the smaller loop is in the same direction as the induced current in the larger loop, it will strengthen the induced current. Conversely, if the current in the smaller loop is in the opposite direction, it will weaken the induced current.

4. Can the direction of the current in the smaller loop be changed?

Yes, the direction of the current in the smaller loop can be changed by altering the external magnetic field. By changing the direction of the external magnetic field, the direction of the current in the smaller loop will also change according to the right-hand rule.

5. How does the direction of the current in the smaller loop affect the resistance of the larger loop?

The direction of the current in the smaller loop does not directly affect the resistance of the larger loop. However, the induced current in the larger loop caused by the smaller loop's current can create a changing magnetic field, which can in turn induce an electromotive force (EMF) and potentially affect the resistance of the larger loop. This is known as electromagnetic induction.

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