If you have circular wire with a current I, and you in- crease I via external means, is there an induced current in the loop separate from the externally applied increase in I? A. B. C. Maybe, there's not enough information to tell Yes No
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- In each of the diagrams shown below, indicate the direction of the magnetic force on the wire. B B B B6. The conducting rod shown in the accompanying figure moves along parallel metal rails that are 25-cm apart. The system is in a uniform magnetic field of strength 0.75 T, which is directed into the page. The resistances of the rod and the rails are negligible. a. What is the emf (including its sense) induced in the rod when it is moving to the right with a speed of 5.0 m/s? b. What force is required to keep the rod moving at this speed? c. What is the rate at which work is done by this force? d. What is the power dissipated in the resistor? B x M x x t x 25 cm 5.0 m/s 0.25 N * NEC2: A magnet moves through the opening within a closed wire loop, and then comes to rest, relative to the loop. The loop is attached only to a meter that displays the current running through it (and not to any emf device). a. As the magnet is moving relative to the loop, does the meter register a non-zero current? b. When the magnet is at rest relative to the loop, does the meter register a non-zero current? c. What is meant by the statement that magnetism is a "relativistic" effect of electricity?
- The current in a long solenoid of radius 6 cm and 22 turns/cm is varied with time at a rate of 3 A/s. A circular loop of wire of radius 8 cm and resistance 7 0 surrounds the solenoid. Find the electrical current induced in the loop (in HA). HAAs seen from the right, the direction of the induced electron flow in the loop of wire at positions A and B, respectively, is: Question 15 options: a clockwise, clockwise b clockwise, counterclockwise c counterclockwise, clockwise d counterclockwise, counterclockwiseAnswer both, thanks