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WorksheetsVisible Lights and Electricity
Total questions: 14
Worksheet time: 6mins
They are a form of electromagnetic radio waves such as infrared radiation, X-rays, microwaves, and ultraviolet radiation.
Sounds
Visible Lights
Light Waves
Ultraviolet Lights
Electro Magnetic radiation can be transmitted in waves or particles at different frequencies and wavelengths. This wide variety of wavelengths is known as the ___________.
White Light
Light Spectrum
Electro Magnetic Spectrum
All of the above
Are specialized cells in our eyes that act as receivers that are tuned to the wavelength of the narrowband of the EM spectrum.
Cones
Retina
Pupil
Cornea
What are the colors present in the visible spectrum?
Red, orange, yellow, green, black, Indigo and violet.
Red, orange, yellow, gold, blue, Indigo and violet.
Red, orange, yellow, green, blue, pink and violet.
Red, orange, yellow, green, blue, Indigo and violet.
What is the phenomenon of splitting of white light into seven colours called?
Distribution
Tyndall Effect
Dispersion
Diffusion
Which light wave color has the longest wavelength?
(a)
Which color has the shortest wavelength?
(a)
It refers to the flow of electricity in an electronic circuit, and to the amount of electricity flowing through a circuit.
Electricity
Electrical Flow
Electric Current
Electric Circuit
What is the Unit used to measure electric current?
Volts
Ohms
Watts
Ampere
It refers to the amount of force pushing the flowing electrons.
Voltage
Ampere
Current
Intensity
He is a German scientist who works to the fundamental relationship between voltage, resistance and the electric current known as Ohm's Law.
Gregory Ohm
Gerry Ohm
Georg Ohm
Greg Ohm
What is the unit used in resistance?
Voltage
Ampere
Watts
Ω
What element is commonly used in electric wires because of its high conductivity?
(a)
An electronic device has a resistance of 20 ohms and a current of 15 A. What is the voltage across the device?
(a)
