Question

In: Physics

If the magnet moves as shown in the diagram, the primary flux through the coil

1) If the magnet moves as shown in the diagram, the primary flux through the coil

A. increases and points to the right.

B. increases and points to the left.

C. decreases and points to the right.

D. decreases and points to the left.

 

2) The magnetic flux is changing as it passes through two coils that are exactly the same. The induced voltage is greatest in the coil whose flux is changing fastest.

True

False

 

3) The primary magnetic flux through a coil is increasing. The induced magnetic flux is in the opposite direction as the primary flux.

True

False

 

Solutions

Expert Solution

1) A) Increases and points to the right

When the North Pole is bringing towards the loop, the magnetic field is increasing inside the loop; hence the flux will too in the direction of the movement

So the answer is A) Increases and points to the right

2) True

induced emf \(\mathrm{e}=\mathrm{N} \Delta(\mathrm{BA}) / \Delta \mathrm{T}\)

As we can see e is proportional to \(\Delta(\mathrm{BA}) / \Delta \mathrm{T},\) the rate of change of flux.

e a rate of change of flux

3) True

The induced flux always will be in a direction that is opposite to the primary flux.

Dr. OWL answered 3 years ago
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