ELECTRIC CURRENT SOURCES

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+ V (Volt) = W (work done, J) Q (charge, C)

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Presentation transcript:

ELECTRIC CURRENT SOURCES Voltaic Elements A glass jar that contains H2SO4 solution Plate of platinum as a positive electrode (cathode) Plate of Zinc (Zn) as a negative electrode (Anode) The chemical reactions causes electrons from Zinc plate to flow to the platinum plate. So, if a bulb connected to these two poles, it will turn on

(H2SO4)

An ammeter is an instrument used to mesure current that passes through measuring ELECTRIC CURRENT An ammeter is an instrument used to mesure current that passes through a node or another part of a circuit. An ammeter to measure current is always connected in series in a circuit

MEASURING POTENTIAL DIFFERENCE Voltmeter is an instrument used to measure voltage that passes across a circuit A voltmeter to measure potetial is connected in parrallel

MEASURING CURRENT AND VOLTAGE MAX. VALUE SHUNT An Ameter BASICMETER UNIT + MULTEPILER SCALE SHOWN Voltmeter MAX. SCALE Reading of scale in measure: X = the scale show by the needle X the selected maximum scale the value on the scale by the max scale X = 42/60 X 20 = 14 V