Figure 20.26 shows a current loop in a magnetic field. Is there a torque on the

Question

Figure 20.26 shows a current loop in a magnetic field. Is there a torque on the loop and, if so, in what direction?

(a) There is a torque that tends to rotate on the loop in the direction (a), clockwise

(b) There is a torque that tends to rotate the loop in direction (b), counterclockwise.

(c) The torque is zero

CONCEPT CHECK 20.7 Torque on a Current Loop Figure 20.26 shows a current loop in a magnetic field. Is there a torque on the loop and, if so, in what direction? (a) There is a torque that tends to rotate on the loop in the direction (a), clockwise (b) There is a torque that tends to rotate the loop in direction (b), counterclockwise. (c) The torque is zero

Explanation / Answer

here , as there will be torque acing on the loop ,

as torque = I * area * B * sin(90 - 30) = I*B*area*sin(60)

hence, Torque is acting and it is acting in (a) clockwise direction

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