Question
Two long, parallel wires carry currents of I1 = 16.0 A and I2 = 8.0 A...
Two long, parallel wires carry currents of I1 = 16.0 A and I2 = 8.0 A in opposite directions (see figure below). Which of the following statements must be true? More than one statement may be correct.
a) In region I, the magnetic field is into the page and is never zero.
b) In region II, the field is into the page and can be zero.
c) In region III, it is possible for the field to be zero.
d) In region I, the magnetic field is out of the page and is never zero.
e) There are no points where the field is zero.
1 II III tI2
Answers
Em = Mo I, Iq 2 T e l 100 € outside. B inside the page O 100 t outside o = for Region suppose (X) + in Region Su Brret - Mol Molz at red 25td) Bone to b)t is wrong. a) 18 also wrong Becaure Bult is Ouide e) is wrong Hence © & d are correct because in Region D we can find a point where Bretat in option ion (d) Bret is outside = 0 &
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