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When LDR is exposed to light energy . Due to light energy incident on LDR surface, free electron movement of an atom is increased in LDR. This causes high conduction of curent flowing through LDR. beause of free electron movement in LDR, resitance get decreased.
Wiki User
∙ 10y ago
Wiki User
∙ 13y agoAs light intensity increases, resistance decreases, hence it will maximise current flow through the LDR. A LDR is a semiconductor, hence it does not give an Ohmic graph ( graph of V against I giving a constant gradient which represents a constant resistance) even if physical conditions such as light is kept constant. LDR's graph is non ohmic, ie it will give a decreasing gradient hence decreasing resistance when light increases.
Wiki User
∙ 14y agoThe resistence is lowered allowing the current to flow through the LDR.
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