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A constant current flows from $A$ to $B$ as shown in the figure. What is the direction of current in the circle?
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Verified Answer
The correct answer is:
None of the above
The magnetic field through the circle is constant as current through the straight wire is constant. So,
$$
\frac{d \phi_{B}}{d t}=0
$$
As, $\quad E=\frac{d \phi_{B}}{d t}=0 \quad \therefore \quad I=\frac{E}{R}=0$
Here, no current is flowing in circle.
$$
\frac{d \phi_{B}}{d t}=0
$$
As, $\quad E=\frac{d \phi_{B}}{d t}=0 \quad \therefore \quad I=\frac{E}{R}=0$
Here, no current is flowing in circle.
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