Application Questions EXAMPLE PROBLEM: In Fig. 2, a loop of copper wire is pulle

Question

Application Questions EXAMPLE PROBLEM: In Fig. 2, a loop of copper wire is pulled to the left out of a magnetic field directed into the page. Find the direction of the induced magnetic field by the loop and the induced current in the loop. Fig. 2: loop of wire pulled to the left out of a B field directed into the page Step 1 Inside loop, B-field pointed INTO PAGE DECREASES Step 2 Loop induces B-field pointed INTO PAGE Step 3 Induced current flows CLOCKWISE 5. In Fig. 3, a straight wire carries current upward. The current is decreasing at a constant rate. Find the direction of the induced B-field in the circular loop to the left and induced current in the loop. [5 pts] Fig. 3: Decreasing current flows upward in wire to right of circular loop Step 1 Inside loop, B-field pointed Step 2 Loop induces B-field pointed Step 3 Induced current flows 6. In Fig. 4, a straight wire carries a constant current of 5 A to the right. Find the direction of the induced B-field in the circular loop above and induced current in the loop. [5 pts Fig. 4: Constant current flows to the right beneath a circular loop Step 1 Inside loop, B-field pointed Step 2 Loop induces B-field pointed Step 3 Induced current flows

Explanation / Answer

5)

Step 1: Inside the loop, B field is pointed out of the page decreases.

Step 2: Loop induces B field pointed out of the page.

Step 3: Induced current flows counterclockwise

6) Step 1: Inside the loop, B field pointed out of the page remains constant sice the current is constant.

Step 2: Loop induced B field is zero.

Step 3: Induced current is zero

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