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Q58PE

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College Physics (Urone)
Found in: Page 814

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Short Answer

Indicate whether the magnetic field created in each of the three situations shown in Figure22.59 is into or out of the page on the left and right of the current

(a) The direction of the magnetic field is out of the page on the left, and into the page on the right.

(b) The direction of the current is similar to the wire (c) therefore on the left the direction of the magnetic field is into the page, and on the right, out of the page.

(c) The direction of the magnetic field on the left is into the page, and on the right is out of the page.

See the step by step solution

Step by Step Solution

Step 1: Define magnetic field

The magnetic impact of electric charges in relative motion and magnetized objects is described by a magnetic field, which is a vector field.

Step 2: The direction of the magnetic field

The right-hand rule-2 will be used to determine the direction of the magnetic field generated by the current in the wire. The fingers curl in the direction of the magnetic field, while the thumb points in the direction of the current.

(a)

From a higher perspective, the fingers curl counter-clockwise by pointing the thumb upwards. This indicates that

(i) The field on the left of the wire is pointing out of the page.

(ii) The field on the right of the wire points into the page.

(b)

The electrons are going upwards in this situation hence the current is heading down, and therefore field points into the page.

From an upper perspective, the fingers curl clockwise by pointing the thumb downwards. This entails

(i) The field to the left of the wire points into the page.

(ii) The field on the right of the wire is pointing away from the page.

(c)

The fingers curl clockwise from an upper perspective while the thumb is facing downwards. This indicates that

(i) The field is pointing to the page to the left of the wire.

(ii) The field is pointing out of the page on the right side of the wire.

Therefore,

Wire (a): Out of the page to the left, into the page to the right.

Wire (b): From the left, go into the page; from the right, go out of the page.

Wire (c): On the left, go into the page; on the right, go out of the page.

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