A 200 volt battery is connected across a resistor causes a current of 10mA determine the resistance of that resistor. if the voltage now reduced to 100v what will be the new value of the current flow?
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Answer:
1 mA = 0.001 A
Therefore, 5 mA = 0.001 * 5
=0.005 A
Resistance = voltage / current
= 100 / 0.005
= 20000 ohms
Current = voltage / resistance
= 25 / 20000
= 0.00125 A (or) 1.25 mA
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