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3. current electricity — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics3. current electricity1 Mark
MCQ
Carbon resistor has resistance specified by three bands having colour red, yellow and black. If this resistor is cut into two pieces of equal length then the new colour code of each one will be (Neglect tolerance of $4^{th}$ band)
  • ✓
    Brown, Red, Black
  • B
    Red, Orange, Black
  • C
    White, Blue, Black
  • D
    Black, Blue, Black
✓

Answer

Correct option: A.
Brown, Red, Black
a
$\mathrm{R}_{\mathrm{L}}=24 \times 10^{\circ}\, \Omega$

$\mathrm{R}_{\mathrm{f}}=\frac{\mathrm{R}_{\mathrm{i}}}{2}=12 \times 10^{\circ}\, \Omega$

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