MIDTERM II Flashcards
(22 cards)
Up
Down
Out of page
Into the page
Out of page
B. Down
A. Attracted to the magnet.
E. Out of page
B. Left to right
Right-hand rule 3
B. Down
B. Hit the wire in front of the plane of the screen.
D. B1 – B2 out of page
How does an antenna produce an electromagnetic wave?
With a magnetic monopole moving at a constant velocity
With a static electric charge
With an oscillating electric charge
With an electric charge moving at constant velocity
With an oscillating electric charge
The intensity of a beam of light is increased but the light’s frequency is unchanged. As a result, which of the followinging is true?
The photons travel faster
Each photon has more energy
The photons are larger
There are more photons per second
There are more photons per second
A. There is a clockwise induced current in the loop.
A metal bar moves through a magnetic field. The induced charges on the bar are?
B
B. The loop has a counterclockwise current.
There is a clockwise induced current in the loop.
There is a counterclockwise induced current in the loop.
There is no induced current in the loop.
There is a clockwise induced current in the loop.
B
D
A. The same direction as I1
B. The opposite direction as I1
D. Out of the screen.
What is the 120 Volts coming out of the wall sockets?
Peak Voltage
RMS Voltage
Average Voltage
B. RMS Voltage
An ideal transformer has 200 turns in its primary coil and 500 turns in its secondary coil.
What type of transformer is it?
Step-up transformer
Step-down transformer
Step-up transformer
If the primary coil of wire on a transformer has less turns of wire than the secondary coil of wire, how will this affect the current observed at the secondary coil?
The current will increase.
The current will stay the same.
The current will decrease.
C. The current will decrease.
