Describe how you could carry out an investigation to show the brightness of bulbs changes when you add more bulbs to a circuit.

If light bulbs are connected in parallel to a voltage source, the brightness of the individual bulbs remains more-or-less constant as more and more bulbs are added to the “ladder”. The current increases as more bulbs are added to the circuit and the overall resistance decreases.

(i got this from google btw)

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54 degrees incident angle = reflected angle

angle is from normal turned to line of ray