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Am i right?Voltmeter Question: Is R Greater or Less than 5ohm?
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[QUOTE="Abhishekdas, post: 3195124, member: 303902"] [b]Voltmeter question...[/b] [h2]Homework Statement [/h2] A student connects an Ammeter A and a Voltmeter V to measure a Resistance R as shown in attached diagram...If the Voltmeter reads 20 V and the ammeter reads 4A then R is 1. equal to5 ohm 2. Greater than 5 ohm 3. Less than 5 ohm 4. Greater than or less than 5 ohm dpending upon the direction of current [h2]Homework Equations[/h2] [h2]The Attempt at a Solution[/h2] My answer is number 3. Less than 5ohm But answer is 2. Gretaer than 5 ohm ...Assuming voltmeter and ammeter are non ideal the PD is still exactly 20V and current is exactly 4A now applying V=iR we get net resistance to be 5ohm but since ammeter has some resistance and total resistance is 5ohm the value of R should be less than 5ohm...This is my reasoning... [/QUOTE]
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Am i right?Voltmeter Question: Is R Greater or Less than 5ohm?
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