Will you observe any change in the glow of the bulb if the length of pencil lead is shortened in the above circuit? Justify your answer.
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1
Answer:
Yes because the energy will be a little less
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Yes there will be some changes
Explanation:
Elements that conducts electric current are generally metals. However nonmetal carbon in the form of graphite is a good conductor of electricity.
As in the given circuit, it is connected using a pencil lead, which conducts the current and makes the bulb glow.
As the length of the lead decreases the conductance increases and hence more current will be conducted and the bulb will glow brighter
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