electronics information exam 1

Front

Ohm’s law states?

(A) Voltage = Current × Resistance

(B) Amperes = Current × Resistance

(C) Voltage = Resistance ÷ Amperes

(D) Ohms = Current ÷ Voltage

Back

Voltage = Current × Resistance

Front

A resistor’s first three color bands are brown, black, and red. What is its value?

(A) 1,000 ohms

(B) 500 ohms

(C) 500 volts

(D) 50 volts

Back

1,000 ohms

Front

In the U.S., all metal equipment, electrical or not, connected to a swimming pool must be?

(A) freestanding.

(B) bonded together.

(C) certified.

(D) none of the above

Back

bonded together

Front

Voltage can also be expressed as?

(A) watts.

(B) amps.

(C) current.

(D) electrical potential difference.

Back

electrical potential difference

Front

Newer cell phones contain a removable memory card, which is often called a?

(A) SIM card.

(B) DIM chip.

(C) PIN card.

(D) PIN chip.

Back

SIM card

Front

Made from a variety of materials, such as carbon, this inhibits the flow of current.?

(A) resistor

(B) diode

(C) transformer

(D) generator

Back

resistor

Front

This is a type of semiconductor that only allows current to flow in one direction. It is usually used to rectify AC signals (conver sion to DC).?

(A) capacitor

(B) inductor

(C) diode

(D) transformer

Back

diode

Front

Radar can operate at frequencies as high as?

(A) 100,000 Hz.

(B) 100,000 kHz.

(C) 100,000 MHz.

(D) 500,000 MHz.

Back

100,000 MHz.

Front

What do AC and DC stand for in the electri cal field?

(A) amplified capacity and differential

capacity

(B) alternating current and direct current

(C) accelerated climate and deduced

climate

(D) none of the above

Back

alternating current and direct current

Front

Changing AC to DC is called what?

(A) capacitance.

(B) impedance.

(C) rectification.

(D) induction.

Back

rectification.