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Magnetic Effect of Current — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsMagnetic Effect of Current1 Mark
MCQ
A $50\, ohm$ galvanometer gets full scale deflection when a current of $0.01\, A$ passes through the coil. When it is converted to a $10\, A$ ammeter, the shunt resistance is ........... $\Omega $
  • A
    $0.01$ 
  • ✓
    $0.05$
  • C
    $2000$ 
  • D
    $5000$ 
✓

Answer

Correct option: B.
$0.05$
(b) ${i_g} = i\frac{S}{{G + S}}$

$ \Rightarrow $$\frac{{0.01}}{{10}} = \frac{5}{{50 + S}}$

$ \Rightarrow $ $S = \frac{{50}}{{999}} = 0.05\,\Omega $.

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