Two Long Parallel Wires 40 Cm Apart Are Carrying Currents

question 50

Multiple Choice

Two long parallel wires 40 cm apart are carrying currents of 10 A and 30 A in the opposite direction. What is the magnitude of the magnetic field halfway between the wires?

• A) 3.0 * 10^-5 T
• B) 2.0 * 10^-5 T
• C) 1.0 * 10^-5 T
• D) 4.0 *10^-5 T

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