9) An infinite long wire carries a current iw(t) = i, cos(ot). Nearby, there is a triangular loop at a distance c from the long wire, with base b and height a. The loop has electrical resistance R. [Express answers in terms of a, b, c, R, lo, t and w as appropriate] (a) At which instants in time is there zero induced current in the loop, during the range 0sts 2n/w? (b) When is the induced current flowing clockwise as viewed in the figure, during the range 0sIs 2n/w? (c) What is the magnitude of the induced current in the loop? Express your answer as a function of time t. iw (d) What is the direction of the force on the loop when: (i) t = 0? Choose one and explain the reason: (no force, attracted to wire, repelled by wire) (i) t = 7/(4a)? Choose one and explain the reason: (no force, attracted to wire, repelled by wire) %3D y b (iI) t = 7/(20)? Choose one and explain the reason: (no force, attracted to wire, repelled by wire) Z (out of page)

9) An infinite long wire carries a current iw(t) = i, cos(ot). Nearby, there is a triangular loop at a distance c from the long wire, with base b and height a. The loop has electrical resistance R. [Express answers in terms of a, b, c, R, lo, t and w as appropriate] (a) At which instants in time is there zero induced current in the loop, during the range 0sts 2n/w? (b) When is the induced current flowing clockwise as viewed in the figure, during the range 0sIs 2n/w? (c) What is the magnitude of the induced current in the loop? Express your answer as a function of time t. iw (d) What is the direction of the force on the loop when: (i) t = 0? Choose one and explain the reason: (no force, attracted to wire, repelled by wire) (i) t = 7/(4a)? Choose one and explain the reason: (no force, attracted to wire, repelled by wire) %3D y b (iI) t = 7/(20)? Choose one and explain the reason: (no force, attracted to wire, repelled by wire) Z (out of page)