Electronics Quiz - Physics Quiz - Science Quiz

• Flash
• Flange
• Fury
• FeRAM

82. Most modern TV’s draw power even if turned off. The circuit the power is used in does what function?

• Sound
• Remote control
• Color balance
• High voltage

83. In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about:

• 5 thousand volts
• 500 volts
• 25 thousand volts
• 100 thousand volts

84. Two vibrating objects are always moving in the same direction at the same time. They are

• Harmonic
• In phase
• Resonant
• Out of phase

85. A Digital to Analog converter is an application of the

• Scaling adder
• Non Inverting Amplifier
• Voltage to Current Converter
• Adjustable Bandwidth Circuit

86. The first step to getting output from a laser is to excite an active medium. What is this process called?

• Exciting
• Pumping
• Raising
• Priming

87. If you double the length of a copper wire, you

• Half its resistance
• Double its resistance
• Quadruple its resistance
• Reduce it to one quarter of its original resistance

88. When a conductor interacts with a magnetic field, the induced current sets up a magnetic field that opposes the interaction. This is known as

• Ampere's Law
• Faraday's Law
• Lenz's Law
• Oersted's Law