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Switch
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Thermistor
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Fuse
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Light Dependent Resistor (LDR)
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Lamp
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Variable Resistor/Reostat
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Light Emitting Diode (LED)
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Diode
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Resistor
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Voltmeter
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Battery
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Ammeter
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A.C Power Supply
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D.C Power supply
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Battery Pack
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Speaker
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Series
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Parallel
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Current flowing in each component is the same
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Current is shared at each junction
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Useful when you need a warning when something breaks
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Useful when you want other components to work when another is broken.
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All components receive the same voltage
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Voltage
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Current
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PUSH behind current
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Rate of flow of electrons
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Measured in Volts (V)
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Measured in Amps (A)
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Measured by voltmeter, which is placed in parallel to circuit
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Measured by ammeter, which is placed in series to circuit
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The more batteries, the more voltage
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The more resistance, the less current
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Resistors are the opposition to flow of current.
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It is measured in Ohms' and is calculated by Ohm's Law
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Voltage = Current x Resistance
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V=IR
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Power = Current x Voltage
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P=IV
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Power = Current2 x Resistance
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P=I2R
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Total Resistance in Series
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R1 + R2 + R3 ...
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Total Resistance in Parallel
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1/R1 + 1/R2 + 1/R3 ...
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Thin wire - Less current
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Thick wire - More current
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Long Wire - Less current
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Short Wore - More current
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Mains voltage is usually 230V
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
