The figure below shows a long straight wire just touching a circular loop carrying a current I₁ = 2.82 A in the clockwise direction. Both lie in the same plane. O (a) What direction must the current I2 in the straight wire have in order to create a magnetic field at the center of the loop in the direction opposite to that created by the loop? O from right to left O from left to right (b) What current must the long straight wire carry in order to have zero net magnetic field strength at the center of the loop? A

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Chapter1: Units, Trigonometry. And Vectors
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The figure below shows a long straight wire just touching a circular loop carrying a current \( I_1 = 2.82 \, \text{A} \) in the clockwise direction. Both lie in the same plane.

**Diagram Description:**
- A circular loop with arrows indicating a clockwise direction, labeled with a current \( I_1 = 2.82 \, \text{A} \).
- A straight horizontal line representing the long straight wire.
- The center of the loop is marked, and a horizontal arrow labeled \( r \) extends across the loop.

**Questions:**

(a) What direction must the current \( I_2 \) in the straight wire have in order to create a magnetic field at the center of the loop in the direction opposite to that created by the loop?
- \( \circ \) from right to left
- \( \circ \) from left to right

(b) What current must the long straight wire carry in order to have zero net magnetic field strength at the center of the loop?
\[ \_ \_ \_ \_ \_ \_ \_ \_ \_ \text{A} \]
Transcribed Image Text:The figure below shows a long straight wire just touching a circular loop carrying a current \( I_1 = 2.82 \, \text{A} \) in the clockwise direction. Both lie in the same plane. **Diagram Description:** - A circular loop with arrows indicating a clockwise direction, labeled with a current \( I_1 = 2.82 \, \text{A} \). - A straight horizontal line representing the long straight wire. - The center of the loop is marked, and a horizontal arrow labeled \( r \) extends across the loop. **Questions:** (a) What direction must the current \( I_2 \) in the straight wire have in order to create a magnetic field at the center of the loop in the direction opposite to that created by the loop? - \( \circ \) from right to left - \( \circ \) from left to right (b) What current must the long straight wire carry in order to have zero net magnetic field strength at the center of the loop? \[ \_ \_ \_ \_ \_ \_ \_ \_ \_ \text{A} \]
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