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Ham Radio Technician Test > Electronic Principles - T5C > Flashcards

Flashcards in Electronic Principles - T5C Deck (11)
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1
Q

What is the ability to store energy in an electric field called?

A

Capacitance

2
Q

What is the basic unit of capacitance?

A

The farad

3
Q

What is the ability to store energy in a magnetic field called?

A

Inductance

4
Q

What is the basic unit of inductance?

A

The henry

5
Q

What is the unit of frequency?

A

Hertz

6
Q

What is the abbreviation that refers to radio frequency signals of all types?

A

RF

7
Q

What is a usual name for electromagnetic waves that travel through space?

A

Radio waves

8
Q

What is the formula used to calculate electrical power in a DC circuit?

A

Power (P) equals voltage (E) multiplied by current (I)

9
Q

How much power is being used in a circuit when the applied voltage is 13.8 volts DC and the current is 10 amperes?

A

138 watts

10
Q

How much power is being used in a circuit when the applied voltage is 12 volts DC and the current is 2.5 amperes?

A

30 watts

11
Q

How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?

A

10 amperes