The figure shows certain wire segments joined together to form a coplanar loop. The loop is placed in a perpendicular magnetic field in the direction going into the plane of the figure. The magnitude of the field increases with time. $I_{1}$ and $I_{2}$ are the currents in the segments ab and cd. Then, [2009]

Question

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(4)

The magnetic field is increasing in the downward direction. Therefore, according to Lenz's law the current $I_{2}$ will flow in the direction $a b$ and $I_{2}$ in the direction $d c$ .

Solution

1 $I_{1} > I_{2}$

2 $I_{1} < I_{2}$

3 $I_{1}$ is in the direction $b a$ and $I_{2}$ is in the direction $c d$

4 $I_{1}$ is in the direction $a b$ and $I_{2}$ is in the direction $d c$

Ans.
(4)

The magnetic field is increasing in the downward direction. Therefore, according to Lenz's law the current $I_{1}$ will flow in the direction $a b$ and $I_{2}$ in the direction $d c$ .

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Solution

1 I1>I2

2 I1<I2

3 I1 is in the direction ba and I2 is in the direction cd

4 I1 is in the direction ab and I2 is in the direction dc