Question

Question 1 (5 points)

Which of the following statements about diodes and triodes is correct?
Question 1 options:


A)
Adjusting the grid within a diode will have more of an effect than it will in the triode.


B)
Diodes, which are often utilized as rectifiers, have two electrodes.


C)
Triodes have three electrodes, whereas diodes have only a grid and a cathode.


D)
Diodes are often utilized as amplifiers, whereas triodes are often used as rectifiers.
Question 2 (5 points)

Which of the following statements about iron filings placed upon glass resting on top of a bar magnet is false?
Question 2 options:


A)
The filings will sit on the glass on curved paths between the north and south poles.


B)
The direction of the flux in the portion of a magnetic field outlined by the filings will be from the north pole of the magnet to the south pole.


C)
The filings will be clustered more densely where the field is weakest.


D)
The density of the filings will match the intensity of the magnetic field.
Question 3 (5 points)

Which of the following correctly identifies a voltage source and its method of developing electric potential?
Question 3 options:


A)
Generatorgenetic action


B)
Primary cellheat action on a device


C)
Thermocouplechemical action


D)
Dry cellchemical action
Question 4 (5 points)

Which of the following would decrease the resistance to the flow of an electric current through a body?
Question 4 options:


A)
Shortening the conductor


B)
Using a conductor with a smaller cross section


C)
Heating the conductor


D)
Lengthening the conductor
Question 5 (5 points)

Which statement correctly describes a short circuit?
Question 5 options:


A)
Almost no current flows through a part of a circuit that has very low resistance because it goes through the load.


B)
Having a part with very low resistance keeps the circuit cooler, preventing damage caused by overheating.


C)
Almost all the current flows through a part of a parallel circuit with very low resistance, instead of through the rest of the circuit.


D)
Having a part with very low resistance keeps circuit breakers and fuses from opening the circuit
Question 6 (5 points)

Which of the following is an accurate description of the relationship demonstrated in Ohm's Law?
Question 6 options:


A)
The electric potential (volts) multiplied by the resistance (ohms) equals the current (amperes).


B)
The electric potential (volts) divided by the current (amperes) equals the resistance (ohms).


C)
The resistance (ohms) divided by the current (amperes) equals the electric potential (volts).


D)
The electric potential (amperes) divided by the resistance (ohms) equals the current (volts).
Question 7 (5 points)

A transmission system at a radio station uses a/an _______ to convert a direct current into a high-frequency alternating current.
Question 7 options:


A)
oscillator


B)
demodulator


C)
modulator


D)
transmitting antenna
Question 8 (5 points)

In an integrated circuit, each wafer is cut into sections, which
Question 8 options:


A)
have multiple circuits and are placed all together in one case.


B)
have multiple circuits and are placed in individual cases.


C)
carry a single circuit and are placed in individual cases.


D)
carry a single circuit and are placed all together in one case.
Question 9 (5 points)

Which of the following does not affect the electrical resistance of a body?
Question 9 options:


A)
Length of the body


B)
Bodies directly surrounding the body


C)
Material composing the body


D)
Temperature of the body
Question 10 (5 points)

Saving...
Which of the following is an example of electrical energy being converted to chemical energy?
Question 10 options:


A)
An electric furnace begins to emit heat to warm a house.


B)
The wheels on a machine begin to turn and move a conveyer belt.


C)
A loudspeaker, which is plugged into the wall, begins to project sound.


D)
A storage battery is charged using an electric current.

Answer 1

Here are the correct answers:

1. B
2. C
3. D
4. A
5. C
6. B
7. A
8. C
9. B
10. D

(If you want brief explanations for any item, I can add them.)