Find the Magnetic Field That Produces a Maximum Torque of 3.14

question 7

Multiple Choice

Find the magnetic field that produces a maximum torque of 3.14 Nm on a coil of wire with 22 loops a length of 30 cm and a width of 20 cm.The coil has a resistance of 50 ohms and is connected to a 120-V battery.

• A)0.020 T
• B)0.048 T
• C)0.99 T
• D)5.7 T
• E)22 T

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