The current flowing through a resistor connected in a electrical circuit and the potential difference developed across its ends are shown in the given ammeter and voltmeter find the least count of both what is the voltage and current across the given resistor
Answers
please give the diagram
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Answer: First of all we must find the least count of the ammeter and voltmeter. Least count is the smallest value that can be measured by the measuring instrument
Least count = Range/Number of n divisions
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Least count of ammeter = 1/50 = 0.02A
Least count of voltmeter = 3/30 = 0.1V
The next part of the question asks us to find the current and potential difference/voltage passing through the resistor.
In this question,
Current = Value shown by ammeter × Least count = 15 × 0.02A = 0.3A
Voltage/Potential Difference = Value shown by voltmeter × Least count = 21 × 0.1V = 2.1V
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