
Concept explainers
(a)
The magnetic force on each side of the loop.
(a)

Answer to Problem 52P
The magnetic force on each side of the loop is given in table 1.
Explanation of Solution
Refer figure 1.
Write an expression for the force on the side.
Here,
Conclusion:
Consider the top side of the loop:
Substitute
Consider the right side of the loop:
Substitute
Consider the bottom side of the loop:
Substitute
Consider the left side of the loop:
Substitute
According to right hand rule, if the thumb, index finger and middle finger are kept perpendicular to each other, the thumb points towards the direction of force if the index finger is kept along the magnetic field and the middle finger is kept along the direction of current.
Thus, the magnetic force on each side of the loop is given in table 1.
Side | Direction of | |||
Top | Into the page | |||
Right | Out of the page | |||
Bottom | Out of the page | |||
Left | Into the page |
Table 1
(b)
The net magnetic force on the loop.
(b)

Answer to Problem 52P
The net magnetic force on the loop is
Explanation of Solution
Write an expression for the net magnetic force.
Conclusion:
Substitute
Thus, the net magnetic force on the loop is
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Chapter 19 Solutions
Physics
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