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MARCH 2024 — Physics STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsMARCH 20244 Marks
Question
Distinguish between an ammeter and a voltmeter. $($Two points each $).$
The displacement of a particle performing simple harmonic
motion is $\frac{1}{3}rd$ of its amplitude. What fraction of total energy will be its kinetic energy?
✓

Answer

  Ammeter Voltmeter
$i.$ It measures current. It measures the potential difference.
$ii.$ It is connected in series. It is connected in parallel.
$iii.$ It is an $\text{MCG}$ with low resistance. $($Ideally zero$)$ It is an $\text{MCG}$ with high resistance. (Ideally infinite)
$iv.$ The smaller the shunt, the greater will be the current measured. The larger its resistance greater will be the potential difference measured.
$v.$ Resistance of ammeter, $R_A = \frac{S G}{S+G}=\frac{G}{n}$ Resistance of voltmeter, $R_v = G + X = Gn_v$
 
 
 
 
 

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