Current is flowing through a conducting hollow pipe whose area of cross-section is shown in the figure. The value of magnetic induction will be zero at
Current is flowing through a conducting hollow pipe whose area of cross-section is shown in the figure. The value of magnetic induction will be zero at
- A
points $P, Q$ and $R$
- B
point $R$ but not at $P$ and $Q$
- C
$Q$ but not at $P$ and $R$
- D
$P$ but not at $Q$ and $R$
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