A 7-turn coil encloses a square area measuring L0.45 m on each side, as seen in

Question

A 7-turn coil encloses a square area measuring L0.45 m on each side, as seen in the figure. The coil lies in the plane of the page and has a clockwise current of I 3.79 A flowing in it. If the coil is in a uniform magnetic field of B = 3.77E-2 T, directed toward the left of the page, what is the magnitude of the torque on t coil? Select the only correct SI units of torque in part one and select the magnitude of the torque in these units 'in part two L hich combination of units below is an SI unit of torque(only one response is correct)? AT BN CT*A DA*T EN*m F W GA HA*m2 Submit Anewer Tries 0/20 A: 1.40x10-1| B: 2.03 x 10-11 Suomit Answer Tries 0/20 C: 2.94x10-11 D: 4.26 × 10-11 E: 6.17×10-11 F: 8.95 x10-1| G: 1.3 H: 1.8

Explanation / Answer

u = N I A

u = 7 x 3.79 x 0.45^2 = 5.372 A m^2

into the page.

B = 0.0377 T

to the left

torque = u x B = u B sin(theta)

= (5.372) (0.0377) sin90

= 0.203 N m

1. Ans: (E) N m

2. (B) 2.03 x 10^-1

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