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

Sagot :

AL2006id
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

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