Max Torque
What is the maximum torque that can act accordingly?
A long copper wire 10.91 m with a cross-sectional area of 0.000124 m2 in the form of a square loop is connected to a battery of 0.0491 V. The resistivity of copper is 2.8 × 10-8 ohm If the loop is placed in a uniform magnetic field of magnitude 0.313 T, which is the maximum torque-Imum can act accordingly? Answer in units of Nm.
OK, I'll give it another chance. Resistance wire is 2.8 * 10 ^ -8 * 10.91/0.000124 = 0.002464 ohm current in the wire is then 0.0491/0.002464 = 19.93 A The force on each side of the square is I * L * B = 19.93 * (10.91 / 4) * 0.313 = 17.01 N. Maximum torque occurs around the diagonal as an axis. The pair of one side of the square is 17.01 * (L / 4) * √ 2 / 2, and four 17.01 * L * √ 2 / 2 = 131 Nm
130.75 RWHP 127.70 Max Torque
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