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Ham Radio Technician Test > Electronic Principles - T5C > Flashcards

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

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

Capacitance

2

What is the basic unit of capacitance?

The farad

3

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

Inductance

4

What is the basic unit of inductance?

The henry

5

What is the unit of frequency?

Hertz

6

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

RF

7

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

Radio waves

8

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

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

9

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

138 watts

10

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

30 watts

11

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

10 amperes