(a)
The magnitude of the magnetic field the cord produces midway between the two wires
Answer to Problem 78QAP
Magnitude of the magnetic field the cord produces midway between the two wires=
Explanation of Solution
Given info:
Formula used:
Calculation:
Conclusion:
Magnitude of the magnetic field the cord produces midway between the two wires=
(b)
The magnitude of the magnetic field the cord produces 2.0 mm from one of the wires in the same plane in which the two wires lie
Answer to Problem 78QAP
Magnitude of the magnetic field the cord produces 2.0 mm from one of the wires in the same plane in which the two wires lie=
Explanation of Solution
Given info:
Formula used:
Calculation:
For the wire on the right side d =2 mm
Field is directed outwards.
For the wire on the left side d =2+4 mm=6 mm
Field is directed inwards.
Field is directed outwards.
Conclusion:
Magnitude of the magnetic field the cord produces 2.0 mm from one of the wires in the same plane in which the two wires lie=
(c)
Comparison of previous magnetic fields with earth's magnetic field
Answer to Problem 78QAP
For case a),
For case b),
Explanation of Solution
Given info:
Formula used:
Calculation:
For case a),
For case b),
Conclusion:
For case a),
For case b),
(d)
Magnetic force do the two wires exert on one another
Answer to Problem 78QAP
Force=
Force is very small
Explanation of Solution
Given info:
Formula used:
Calculation:
Force on each wire.
Force is very small
Conclusion:
Force=
Force is very small
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Chapter 19 Solutions
COLLEGE PHYSICS
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- Two long, straight wires cross each other at a right angle, and each carries the same current I (Fig. OQ22.6). Which of the following statements is true regarding the total magnetic field due to the two wires at the various points in the figure? More than one statement may be correct. (a) The field is strongest at points B and D. (b) The field is strongest at points A and C. (c) The field is out of the page at point B and into the page at point D. (d) The field is out of the page at point C and out of the page at point D. (e) The field has the same magnitude at all four points. Figure OQ22.6arrow_forwardFigure CQ19.7 shows a coaxial cable carrying current I in its inner conductor and a return current of the same magnitude in the opposite direction in the outer conductor. The magnetic field strength at r = r0 is Find the ratio B/B0, at (a) r = 2r0 and (b) r = 4r0. Figure CQ19.7arrow_forwardSketch a plot of the magnitude of the magnetic field as a function of position r for a coax (Fig. P31.27).arrow_forward
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