An ammeter can measure current up to 500 mA. There are 20 equal divisions between 0 and 100 mA marks on the scale. During an experiment to determine the equivalent resistance of the two resisters joined in parallel a student observes ammeter’s pointer at 3rd graduation mark after zero when the key is off and the pointer at the 17th graduation mark after 200 mA when the key is inserted into the plug. Find the value of the current flowing through the circuit.
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the current flowing through it is 270 mA
sarinsavir:
What's the method
the difference bw each part is 20 and inside
least count = > total division / total difference
> does it helped
Yeah thanks
sorry if not able to understand
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An ammeter can measure current up to 500mA. There is 20 equal division between 0 and 100mA mark on its scale. During an experiment to determine the equivalent resistance of the two resistors joined in parallel a student observes ammeter’s pointer at 3rd graduation mark after zero when the key is off and the pointer at the 17th graduation mark after 200mA when the key is inserted into the plug.The correct value of the current flowing in the circuit is
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