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Physics

End of Year Assessment

QuestionAnswer
If you INCREASE the voltage, ________ current will flow More
If you INCREASE the resistance, _______ current will flow Less
What does the ammeter do? Measures the current
What is current measured in? Amps
The ammeter must be placed in series/parallel in a circuit In series
What does a voltmeter measure Voltage
What is voltage measured in? Volts
What equation links current, voltage and resistance? Voltage = current x resistance (V = IR)
What equation links time, velocity and speed? V = s/t
What equation links acceleration, time taken and change in velocity? Acceleration = change in velocity/time taken
What is the formula for wave speed? Wave speed = frequency x wavelength
What is the formula for acceleration (more complicated one)? 2as = v2 - u2
On a velocity/time graph, distance travelled is shown by what? The area under the curve
What is the formula for frequency? F = 1/T
What is the formula for the speed of a wave? V = frequency x wavelength
When a wave travels into a more dense medium, what happens to the frequency? It stays the same
Materials through which light travels more slowly, have a __________ refractive index Higher
What medium has the lowest refractive index? A vacuum
What is the equation used to find the refractive index of a material? Refractive index = speed of light in vacuum/speed of light in material
What is the formula for refractive index using Snell’s Law? Refractive index = sin (angle of incidence)/sin (angle of refraction)
Created by: PodgyGeordie
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