A Circular Metal Loop of Radius 10 Cm and Three $I _ { 1 } = 60 \mathrm {~A}$

question 146

Multiple Choice

A circular metal loop of radius 10 cm and three long straight wires carry currents of $I _ { 1 } = 60 \mathrm {~A}$ $\mathrm { I } _ { 2 } = 20 \mathrm {~A}$ $I _ { 3 } = 70 \mathrm {~A}$ and $I _ { 4 } = 30 \mathrm {~A}$ as shown in the figure. Each of the straight wires is 20 cm from the center of the loop. The axes are shown in the figure, with the +z-axis coming out of the paper. What is the z component of the resultant magnetic field at the center of the loop? (μ₀ = 4π × 10^-7 T ∙ m/A)

• A) -360 μT
• B) +360 μT
• C) -40 μT
• D) +40 μT
• E) -170 μT

Understand the impact of property rights on resource conservation and deforestation.

Grasp the concepts of extraction cost, user cost, and their implications for resource utilization.

Recognize the significance of enforceable property rights in preserving resources for future use.

Analyze the relationship between private property treatment and the extinction threat to species.

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