Question

2. (1) An aircraft is flying directly over the North Magnetic pole with a velocity V. The aircraft is pictured below as it would be viewed from above. What is the direction of the induced emf (voltage) on the wing? is this from P to or Q to P2. Draw the + and at the P and Qsides and explain. f ..P.. (11) A conducting loop of wire is horizontal. A bar magnet is pushed toward the loop from below, along the axis of the loop. a) What is the direction of the induced current in the loop? b) Is there a magnetic force on the loop? If so, in which direction? Explain. Hint: after knowing the direction of the induced current, use the right hand curl rule to find the force on current due to the external magnetic field (111) The figure shows a region of uniform magnetic field directed out of the page. Outside the region, the magnetic field is zero. Rectangular loops of wire move as indicated. At the instant shown in the diagram, indicate the direction of the induced current flow (cw, cow, or no current flow). a) Loop 1 b) Loop 2 c) Loop 3 d) Loop 4

Answer 1

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1) Direction (polarity) OB C) Loop-3, (Clockwise) d) loop-4, Counter-clockwise of emf induced 'p is given by Right hand palmrule Right hand thumb represent direction of]. Remaining fingers represents B. then Palm represents higher potential terminal so from P too. And 2) a) Current is induced in 'Counter-clockwise); in order to repel the magnet by producting induced dipole moment. b) Yes! force experienced by loop is repulsive so it will be in fupward divection') Al 3) ) a) loop-1, field is decreasing out of page as loop is coming out of the field so induced Current is in "Counter-clockwise b) loop-2, Here, opposite situation as of loop-1 so Clockwise) current is induced. in order to supportit,