Two Long Parallel Wires Carry Currents of 10 a in Opposite

question 51

Multiple Choice

Two long parallel wires carry currents of 10 A in opposite directions.They are separated by 40 cm.What is the magnitude of the magnetic field in the plane of the wires at a point that is 20 cm from one wire and 60 cm from the other? (μ₀ = 4π × 10^-7 T • m/A)

• A) 1.5 µT
• B) 3.3 µT
• C) 6.7 µT
• D) 33 µT
• E) 67 µT

---

Definitions:

Random Assignment

A method used in experiments to place participants into different groups using chance, ensuring that each group is equally likely to receive different treatments.

Intelligence

The ability to acquire knowledge, solve problems, and use reasoning to adapt to new situations.

Test Difficulty

A measure of how challenging a test or examination is, often determined by the proportion of test-takers who answer each item correctly.

Sequence of Births

The chronological order in which children are born into a family, which is often studied to understand its psychological impact on personality and development.