
(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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