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Current Electricity — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
MCQ
An ionization chamber with parallel conducting plates as anode and cathode has $5 \times 10^7$ electrons and the same number of singlycharged positive ions per $cm ^3$. The electrons are moving at $0.4\ m / s$. The current density from anode to cathode is $4 \ \mu A / m ^2$. The velocity of positive ions moving |towards cathode is
  • A
    $0.4\ m/s$
  • B
    $16\ m/s$
  • C
    Zero
  • ✓
    $0.1\ m/s$
✓

Answer

Correct option: D.
$0.1\ m/s$
$0.1\ m/s$

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