Name Lab Partner(s) EX PERIMENT Laboratory Repon 27 QUESTIONS I. I. Indicate how

Question

Name Lab Partner(s) EX PERIMENT Laboratory Repon 27 QUESTIONS I. I. Indicate how the dial for the triple-scale voltmeter having 1.5-V, 6-V, and 15-V scales might be labeled. 2 lo 2. What would be the lowest voltage scale that could be made using your galvanometer? The lavest voage scale e us /V which is 3. The sensitivity of a voltmeter is commonly expressed in ohms per volt ( of a voltmeter is commonly expressed in ohms per volt (Q/V), which is the total resistance of the meter (+Rm) divided by the full-scale reading. Calculate the ohms per volt sensitivity for each of the three voltage scales that you designed for your galvanometer. Are they the same? Are they equal to l/l? yes, all are the Some and are funscate appoximato 73.86 4. Indicate how the dial for the triple-scale ammeter you designed might be labeled. 5. Ammeter shunts are rated in terms of the voltage drop when the rated full-scale current is flowing. For example, it might be 200 A. 50 mV. What would be the millivolt rating on shunts designed for use with your galvanometer? unts des 329

Explanation / Answer

For 1.5 V

each divicion = 2/5 = 0.4 V

then first division from left.i.e from 0V is 0.4V

third division is 1.2V and 4th one is 1.6 V

so 1.5V lies between 3rd and 4th division

15 Vis not possible because the maximum volatge calibrated is 12 V

6V mark is correvt

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glavanometer just shows the passage of current through the circuit
and not related to voltage

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