The charge of an electron is

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LPSC (ISRO) Technician B (Electronic Mechanic): Previous Year Paper (Held on 4 March 2018)
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  1. 1.602 × 10-19 coulomb
  2. 6.24 × 10-18 coulomb
  3. 6.24 × 10-19 coulomb
  4. None of the above

Answer (Detailed Solution Below)

Option 1 : 1.602 × 10-19 coulomb
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Detailed Solution

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Charge on an electron is 1.602 x 10-19 C.

Charge:

  • There are two kinds of charge, positive and negative.
  • Like charges repel, unlike charges attract.
  • The positive charge comes from having more protons than electrons.
  • A negative charge comes from having more electrons than protons.
  • A charge is quantized.
  • A charge is conserved.

q = n e

q is the symbol used to represent charge, while n is a positive or negative integer, and e is the electronic charge, 1.60 x 10-19 Coulombs.

Additional Information

Particle

Charge (C)

Mass (Kg)

Proton p+

+ 1.602 × 10-19

1.67 × 10-27

Neutron n0

0

1.67 × 10-27

Electron e-

-1.602 × 10-19

9.11 × 10-31

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