3. Which statement about transformers is FALSE?
A. A step-down voltage transformer steps up the current.
B. Transformers use mutual induction.
C.
Transformers are an application of Faraday's and Lenz's Laws.
D. A transformer can function with either an alternating current (AC)
or a steady direct current (DC).
4. What transformation can take place in an improvised generator?
A. mechanical energy into electrical energy
B. electrical energy into mechanical energy
C. alternating current into direct current
D.
direct current into alternating current
5. A loop of conductor lies flat on a horizontal table. A toy magnet is
hanging still over it with the magnet's north-seeking pole pointing
down. What happens next?
A.
The magnet produces a clockwise current in the coil.
B.
The magnet does not produce any current in the coil.
C.
The magnet produces an upward electromagnetic current.
D.
The magnet produces a counterclockwise current in the coil.
6. What is the transfer of electricity in a motor?
A. electrical to mechanical
B. physical to potential
C. mechanical to electrical
D. chemical to mechanical
7. What is the transfer of electricity in a generator?
A. Electrical to Mechanical
B. Physical to Potential
C. Yogurt to Light
D. Mechanical to Electrical
8. What can you use to make an electromagnet?
A. Battery, pencil and wire
B. Battery, nail and string
C. Wire, battery and iron ore (nail)
D. Peanut butter, lampshade, hand sanitizer
rotate inside a coil of
9. In large generators in power plants,
wire to reduce an electric current.
A. Water
B. Wind
C. Magnets
D. Circuits
10. Which device uses mechanical energy to produce electrical energy?
A. Solar Cell
B. Generator
C. Magnet
D. Electric Motor​