Electronics Quiz - Physics Quiz - Science Quiz

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90. The colour of light that you see is related to

• The amplitude of just an electric wave
• The frequency of an electromagnetic wave
• The amplitude of just a magnetic wave
• The frequency of just a magnetic wave

91. Electrostatic and gravitational forces are similar in that they

• Are both always attractive
• Are both very strong forces
• Are both proportional to the inverse square of distance
• Are both always repulsive

92. Which of these energy changes takes place in a flashlight?

• Heat to light
• Electrical to chemical to light and heat
• Chemical to electrical to light and heat
• Electrical to light to heat

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

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

94. Electric field lines

• Are closer together where the field is weak
• Are drawn perpendicular to the electric field
• Radiate out from a negative charge
• Radiate out from a positive charge

95. What property of sound does the amplitude of the sound wave represent?

• Pitch
• Quality
• Loudness
• Frequency

96. A characteristic of the ASCII code is

• Its use of the zone codes 1010, 1011 and 1100
• Its independence from Hollerith Code
• Its limitation to a maximum of 96 character configuration
• All of these