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Electric Charges and Fields — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectric Charges and Fields1 Mark
MCQ
A proton and an electron are placed in a uniform electric field.
  • A
    The electric forces acting on them will be equal.
  • B
    The magnitudes of the forces will be equal.
  • C
    Their accelerations will be equal.
  • D
    The magnitudes of their accelerations will be equal.
✓

Answer

  1. The magnitudes of the forces will be equal.

Explanation:

Proton contain positive charge = 1.6 × 10-19 = e

Electron contain negative charge = -1.6 × 10-19 = -e

Force inoniforma electric field is = qE

$\therefore\ $The Magniludes of Electric force is equal But direction of electric force is opposite to each other.

mass of proton = 1.67 × 10-27Kg.

mass of electron = 9.1 × 10-31Kg.

So that Magnitudes of their acceleration will be unequal.

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