Magnetics 2 Question 16
16. A battery is connected between two points
(a) proportional to
(b) inversely proportional to
(c) zero, only if
(d) zero for all values of
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Answer:
Correct Answer: 16. (c)
Solution:
- For a current flowing into a circular arc, the magnetic induction at the centre is
In the given problem, the total current is divided into two arcs
or
i.e. magnetic field at centre due to
