Thermisters - are components whose resistance changes with temperature. They are used as temperature sensors., Light dependent resistors (LDR) - are components which change their resistance depending on the light intensity shining on them. They can be used as light sensors in electrical circuits, Diodes - control the direction of the flow of a current, only allow the current to flow in one direction through the components., Voltage =  - current x resistance (i x r), Current = - Voltage ∕ resistance  (v ∕ r), Resistance =  - Voltage ∕ current (v ∕ i ), Resistor - a component having resistance to the passage of an electric current, Fuse - is an electrical safety device that operates to provide overcurrent protection of an electrical circuit, Light emiting resitor (LED) - is a component that emits light when current flows through it. , Variable resistor - are components used in electric circuits to adjust the value of current or voltage,

Components in an electrical circuit

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