The resistance of the rectangular current loop is R, and the metal rod is slidin

Question

The resistance of the rectangular current loop is R, and the metal rod is sliding to the left. The length of the rod is d, while the width of the magnetic region is l. a, and b are the contact points where the rod touches the rails, and d > l. Consider the relationship between the potentials Vb and Va and the direction of the induced magnetic field. Which statement is true? Va > Vb and is into the page. Ka > Kb and is down Ka > Kb and is out of the page. Vb > Va and is down Vb > Va and is into the page. Vb = Va and is up Vb = Va and is into the page. Vb > Va and is out of the page. Vb = Va and is out of the page. Va > Vb and is up

Explanation / Answer

for the given figure 1 is right coz b is into page and current will flow from a to b

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