1. A 35 turn coil ofradius 4.9 cm rotates in a uniformmagnetic field having a ma
ID: 1739536 • Letter: 1
Question
1. A 35 turn coil ofradius 4.9 cm rotates in a uniformmagnetic field having a magnitude of 0.52 T. If the coil carries a current of35 mA, find the magnitude of themaximum torque exerted on the coil.1 N · m
2. A rectangular loop consists of86 closely wrapped turns and hasdimensions 0.40 m by 0.30 m. The loop is hinged along they-axis, and the plane of the coil makes an angle of30.0° with the x-axis (see figure below). What is themagnitude of the torque exerted on the loop by a uniform magneticfield of 0.92 T directed along thex-axis, when the current in the windings has a value of1.2 A in the direction shown?
1 N · m 1. A 35 turn coil ofradius 4.9 cm rotates in a uniformmagnetic field having a magnitude of 0.52 T. If the coil carries a current of35 mA, find the magnitude of themaximum torque exerted on the coil.
1 N · m
2. A rectangular loop consists of86 closely wrapped turns and hasdimensions 0.40 m by 0.30 m. The loop is hinged along they-axis, and the plane of the coil makes an angle of30.0° with the x-axis (see figure below). What is themagnitude of the torque exerted on the loop by a uniform magneticfield of 0.92 T directed along thex-axis, when the current in the windings has a value of1.2 A in the direction shown?
1 N · m
Explanation / Answer
The magnitude of the maximum torque exerted on the coil is=NIABsin for the maximum torque =900 =NIAB =(35)(0.035)(3.14)(0.049)2(0.52) =0.0048N.m Same formula for the second but area (A) =0.40m*0.30m =0.12m2
Same formula for the second but area (A) =0.40m*0.30m =0.12m2
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