# Problem: The magnetic field in the figure is decreasing at the rate of 0.7 T/s.1. What is the magnitude of the acceleration of a proton at rest at point a?2. What is the direction of the acceleration of a proton at rest at point a?a. horizontally to the rightb. downwardc. upwardd. horizontally to the lefte. a = 03. What is the magnitude of the acceleration of a proton at rest at point b? Express your answer as an integer and include the appropriate units.4. What is the direction of the acceleration of a proton at rest at point b?a. horizontally to the rightb. downwardc. upwardd. horizontally to the lefte. a = 05. What is the magnitude of the acceleration of a proton at rest at point c?6. What is the direction of the acceleration of a proton at rest at point c?a. horizontally to the rightb. downwardc. upwardd. horizontally to the lefte. a = 07. What is the magnitude of the acceleration of a proton at rest at point d?8. What is the direction of the acceleration of a proton at rest at point d?a. horizontally to the rightb. downwardc. upwardd. horizontally to the lefte. a = 0

###### FREE Expert Solution

1.

Let's consider an Amperian circle, which passes through and has its center at b.

The motion of the proton induces an emf when placed at the point and is given by:

$\overline{){\mathbf{\epsilon }}{\mathbf{=}}{\mathbf{-}}\frac{\mathbf{d}\mathbf{\varphi }}{\mathbf{d}\mathbf{t}}}$, where Φ is the magnetic flux given by Φ = B•A.

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###### Problem Details

The magnetic field in the figure is decreasing at the rate of 0.7 T/s.

1. What is the magnitude of the acceleration of a proton at rest at point a?

2. What is the direction of the acceleration of a proton at rest at point a?

a. horizontally to the right

b. downward

c. upward

d. horizontally to the left

e. a = 0

3. What is the magnitude of the acceleration of a proton at rest at point b? Express your answer as an integer and include the appropriate units.

4. What is the direction of the acceleration of a proton at rest at point b?

a. horizontally to the right

b. downward

c. upward

d. horizontally to the left

e. a = 0

5. What is the magnitude of the acceleration of a proton at rest at point c?

6. What is the direction of the acceleration of a proton at rest at point c?

a. horizontally to the right

b. downward

c. upward

d. horizontally to the left

e. a = 0

7. What is the magnitude of the acceleration of a proton at rest at point d?

8. What is the direction of the acceleration of a proton at rest at point d?

a. horizontally to the right

b. downward

c. upward

d. horizontally to the left

e. a = 0