(a)
The torque on the coil.
(a)
Answer to Problem 59P
The torque on the coil is
Explanation of Solution
Given:
Diameter of the circular coil is 16 cm containing 9 loops. Earth’s magnetic field on the ground is
Formula used:
The torque is calculated as
Calculation:
Here, angle is the angle between the Earth’s magnetic field and the face of the coil that is
Now, the torque on the coil is
Conclusion:
The torque on the coil is
(b)
The direction of rising of coil edge.
(b)
Answer to Problem 59P
North edge of the coil will rise first.
Explanation of Solution
Introduction:
Every rotation tries to make stability with the field when torque is considered.
Here, coil will tend to rotate in that direction where orientation of the angle is zero as the coil is free to rotate. North edge of the coil will move first because the perpendicular of the face of the coil will align in the parallel direction with the Earth’s magnetic field.
Conclusion:
North edge of the coil will rise first.
Chapter 20 Solutions
Physics: Principles with Applications
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