![Р [12]35. A piece of wire is bent in the shape shown (two 32.6 cm straight sections and a 3/4 of a circle section with radius](http://img.homeworklib.com/questions/cb01e490-07f5-11eb-94c6-b944a75bac35.png?x-oss-process=image/resize,w_560)
Answers
Magnetic field at point P due to two straight wire is zero because they pass through the point P. (Subtends 0°).
Hence option a is false
Option B is also false as in this case it is easy to find magnetic field using Biot sawart Law.
Option C is true
Option D is false as there is no magnetic field due to vertical section wire.
Option E is alse false as magnetic field at point P is not exactly zero because magnetic field due to 3/4 circle section is given by : 3
o×I/8r where I is current and r is radius. i.e B≠0
Option F is true as magnetic field is calculated using Biot sawart law.
Hence option C and F are true.
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