The arm P Q of a rectangular conductor is moving from x = 0 to x = 2 b outwards and then inwards from x = 2 b to x = 0 as shown in the figure. A uniform magnetic field perpendicular to the plane is ac

Question

The arm P Q of a rectangular conductor is moving from x = 0 to x = 2 b outwards and then inwards from x = 2 b to x = 0 as shown in the figure. A uniform magnetic field perpendicular to the plane is acting from x = 0 to x = b . Identify the graph showing the variation of different quantities with distance:

TestHub · Accepted Answer

As rod moves in field area increases upto $x = b$ , then field is absent and again flux is generated on return journey from $x = b$ to $x = 0$ . Thus plot $A$ for flux.
$\Rightarrow e = - \frac{d ϕ}{d t} \Rightarrow$ curve $B$ for $emf$
$\Rightarrow$ Power dissipated $= v i \Rightarrow$ curve $C$ for power dissipated

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