The drawing shows a top view of two circular coils of conducting wire lying on a flat surface. The centers of the coils coincide. In the larger coil there are a switch and a battery. The smaller coil contains no switch and no battery. Describe the induced current that appears in the smaller coil when the switch in the larger coil is closed. (a) It flows counterclockwise forever after the switch is closed. (b) It flows clockwise forever after the switch is closed. (c) It flows counterclockwise, but only for a short period just after the switch is closed. (d) It flows clockwise, but only for a short period just after the switch is closed.

The drawing shows a top view of two circular coils ofconducting wire lying on a flat surface. The centers of the coilscoincide. In the larger coil there are a switch and a battery. Thesmaller coil contains no switch and no battery. Describe theinduced current that appears in the smaller coil when the switch inthe larger coil is closed. (a) It flows counterclockwise forever after the switch isclosed. (b) It flows clockwise forever after the switch is closed. (c) It flows counterclockwise, but only for a short period justafter the switch is closed. (d) It flows clockwise, but only for a short period just after theswitch is closed.

A long, vertical, straight wire carries a current I which is directed upward. The wire is perpendicular to the plane of a circular metal loop and passes through the center of the loop. The loop is allowed to fall and maintains its orientation with respect to the straight wire while doing so. In what direction does the current induced in the loop flow? a) There is no induced current b) It is flowing around the loop in a counterclockwise motion. c) It is flowing in a clockwise motion.

1) What is the gain at 100Hz for an amplifier that has a mid-band gain of 5000, a lower cutoff frequency of 10kHz, and a upper cutoff frequency of 200kHz 2)Calculate the decibel power gain for an Ap= 50? 3)If the decibel voltage gain of an amplifier is 60dB, what is the voltage gain (Av)? 4)If the decibel power gain of an amplifier is 20dB, what is the power gain (AP)? 5)For a two stage amplifier with AV1(DB) equal to 20 dB and AV2(DB) equal to 40dB what is the overall voltage gain (AV)?