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Find the current through a resistor of 2.0ohm if the p.d across it is 0.5v ??
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Find the current through a resistor of 2.0ohm if the p.d across it is 0.5v ??

User Geiser
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Voltage (potential difference) across any component = (current) x (resistance)

0.5 volt = (current) x (2 ohms)

Divide each side by 2 ohms :

Current = 0.5 / 2 = 0.25 Ampere = 250 mA

User Josef Kufner
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