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A Long Straight Very Thin Wire on the Y-Axis Carries

Question 65

Multiple Choice

A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ0 = 4π × 10-7 T ∙ m/A) A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A) A) zero B) -8.0 × 10<sup>-6 </sup>T C) (+4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) D) (-4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) E) (-4.0 × 10<sup>-6</sup><sup> </sup>T) - (8.0 × 10<sup>-6 </sup>T)


A) zero
B) -8.0 × 10-6 T A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A) A) zero B) -8.0 × 10<sup>-6 </sup>T C) (+4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) D) (-4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) E) (-4.0 × 10<sup>-6</sup><sup> </sup>T) - (8.0 × 10<sup>-6 </sup>T)
C) (+4.0 × 10-6 T) A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A) A) zero B) -8.0 × 10<sup>-6 </sup>T C) (+4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) D) (-4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) E) (-4.0 × 10<sup>-6</sup><sup> </sup>T) - (8.0 × 10<sup>-6 </sup>T) - (4.0 × 10-6 T) A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A) A) zero B) -8.0 × 10<sup>-6 </sup>T C) (+4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) D) (-4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) E) (-4.0 × 10<sup>-6</sup><sup> </sup>T) - (8.0 × 10<sup>-6 </sup>T)
D) (-4.0 × 10-6 T) A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A) A) zero B) -8.0 × 10<sup>-6 </sup>T C) (+4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) D) (-4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) E) (-4.0 × 10<sup>-6</sup><sup> </sup>T) - (8.0 × 10<sup>-6 </sup>T) - (4.0 × 10-6 T) A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A) A) zero B) -8.0 × 10<sup>-6 </sup>T C) (+4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) D) (-4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) E) (-4.0 × 10<sup>-6</sup><sup> </sup>T) - (8.0 × 10<sup>-6 </sup>T)
E) (-4.0 × 10-6 T) A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A) A) zero B) -8.0 × 10<sup>-6 </sup>T C) (+4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) D) (-4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) E) (-4.0 × 10<sup>-6</sup><sup> </sup>T) - (8.0 × 10<sup>-6 </sup>T) - (8.0 × 10-6 T) A long straight very thin wire on the y-axis carries a 10-A current in the positive y-direction. A circular loop 0.50 m in radius, also of very thin wire and lying in the yz-plane, carries a 9.0-A current, as shown. Point P is on the positive x-axis, at a distance of 0.50 m from the center of the loop. What is the magnetic field vector at point P due to these two currents? (μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A) A) zero B) -8.0 × 10<sup>-6 </sup>T C) (+4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) D) (-4.0 × 10<sup>-6 </sup>T) - (4.0 × 10<sup>-6 </sup>T) E) (-4.0 × 10<sup>-6</sup><sup> </sup>T) - (8.0 × 10<sup>-6 </sup>T)

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