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CAIE IGCSE Physics Relative Charges of Protons Neutrons Electrons

Practise assigning relative charges to protons, neutrons and electrons and use their signed totals to check charge conservation in a nuclear change.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • state the relative charges of proton, neutron and electron as +1, 0 and -1 respectively
  • add signed particle charges on each side of a nuclear change to demonstrate charge conservation

5.1.2.2—Relative charges of protons, neutrons question 1

[Maximum number: 1]

The charge on a proton is e.
What is the charge on an electron and what is the charge on a neutron?

electron

neutron

e

e

e

0

-e

-e

-e

0

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