3. (35pts.) A square loop of side a. placed to the right of a very long wire is moving at a constant speed 1.: making and angle 0 S 6' g 90 with the horizontal (see gure). The wire carries a steady current I. Assume that at time t = 0, the loop is at a distance T0 from the wire. '5. _..;3 'V A / }_9_.1 (a) What is the direction of the induced current in the loop? Explain your answer. (b) Find the induced emf in the loop in terms of the given quantities and t. (c) For which value of 6 is the absolute value of the induced emf maximum and for which value is it minimum? Make direct calculation or a sound explanation. (d) If the loop has resistance R, what is the magnitude and direction of the force needed to keep the velocity of the loop constant