RESISTORS A resistor is used to reduce the flow of electricity in an electric circuit. Resistorscome in fixed or variable types.

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Presentation transcript:

RESISTORS A resistor is used to reduce the flow of electricity in an electric circuit. Resistorscome in fixed or variable types.

A fixed resistor cannot be changed as it is set at a specific value FIXED RESISTORS

Variable resistors also known as rheostats can have their resistance changed by moving a slider.

•. Thermistors are resistors whose resistance changes with temperature • Thermistors are resistors whose resistance changes with temperature. The higher the temperature, the lower the resistance. THERMISTOR

LIGHT DEPENDANT RESISTOR LDR An LDR is a component that has a (variable) resistance that changes with the light intensity that falls upon it. LIGHT DEPENDANT RESISTOR LDR

A diode is an electrical device allowing current to move through it in one direction with far greater ease than in the other. DIODE

LIGHT EMITTING DIODE LED A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. LIGHT EMITTING DIODE LED