Two long straight wires are parallel and carry current in the same direction. The currents are 8.0 and 12A and the wires are separated by 0.40 cm. The magnetic field in tesla at a point midway between the wires is:
Correct answer: C. 4.0 x 10^-4
- A. 0
- B. 8.0 x 10^-4
- C. 4.0 x 10^-4
- D. 12 x 10^-4
Explanation
At midpoint between two wires carry current in the same direction B=B2-B1
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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