Q4 · 2021 · Paper 1Simple familiar1 mark
QUESTION 4
The diagram shows two charges, and , separated by a distance, . There is a force, , acting between the two charges.
Calculate the magnitude of the force acting between the two charges if is halved and the charge of is doubled.
(A)
1F
(B)
2F
(C)
4F
(D)
8F
WORKED SOLUTION
1 markAnswer D
ANSWER
D
Worked solution
Coulomb force varies as . Doubling multiplies the force by 2 and halving multiplies it by 4, giving . Option D.
Selects option D.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.