Lenz's Law Video Lessons

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Problem: The bar magnet is pushed toward the center of a wire loop. As a consequence, there is a clockwise induced current in the loop. Use lenz's law to explain this: As the bar magnet approaches the loop, 1. The magnetic flux through the loop is _______________. (increasing/decreasing/staying the same). 2. The induced current creates an induced magnetic field that acts to ____________ (weaken/reinforce) the ____________ (rising/falling) magnetic flux through the loop.3. The direction of the induced field is therefore _______________ (upwards/downwards) and induced current I in the loop is ____________ (clockwise/counter-clock wise/zero)

FREE Expert Solution

In this problem, we need to know Lenz's law. 

Lenz's law states that when a changing magnetic flux generates an emf, the polarity of the induced emf is such that it produces a current whose magnetic field opposes the changes that produced it. 

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Problem Details

The bar magnet is pushed toward the center of a wire loop. As a consequence, there is a clockwise induced current in the loop. Use lenz's law to explain this: 

As the bar magnet approaches the loop, 

1. The magnetic flux through the loop is _______________. (increasing/decreasing/staying the same). 

2. The induced current creates an induced magnetic field that acts to ____________ (weaken/reinforce) the ____________ (rising/falling) magnetic flux through the loop.

3. The direction of the induced field is therefore _______________ (upwards/downwards) and induced current I in the loop is ____________ (clockwise/counter-clock wise/zero)

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Our tutors have indicated that to solve this problem you will need to apply the Lenz's Law concept. You can view video lessons to learn Lenz's Law. Or if you need more Lenz's Law practice, you can also practice Lenz's Law practice problems.