Q3 · 2023 · Paper 1Simple familiar1 mark
QUESTION 3
A current-carrying wire is shown.
Determine the magnetic field strength at X.
(A)
5 × 10-6 T out of the page
(B)
5 × 10-6 T into the page
(C)
5 × 10-8 T out of the page
(D)
5 × 10-8 T into the page
WORKED SOLUTION
1 markAnswer A
ANSWER
A
Worked solution
For a long straight wire, . With A and m, T; the right-hand rule gives the direction shown in option A.
Selects option A.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.