CIE iGCSE Co-Ordinated Science P4.5.3 Magnetic effect of current Exam Style Questions Paper 1
▶️ Answer/Explanation
The magnetic field around a straight current-carrying wire forms concentric circles centred on the wire.
The direction of these circles is found using the right-hand grip rule.
Since the current flows into the page, the field circles run clockwise when viewed from the reader’s side of the page.
Diagram C is the only one showing concentric circles in this clockwise direction.
✅ Answer: (C)
The direction of these circles is found using the right-hand grip rule.
Since the current flows into the page, the field circles run clockwise when viewed from the reader’s side of the page.
Diagram C is the only one showing concentric circles in this clockwise direction.
✅ Answer: (C)
▶️ Answer/Explanation
The magnetic field around a straight current-carrying wire forms concentric circles centred on the wire.
The direction of these field circles is given by the right-hand grip rule: thumb pointing along the current, fingers curling in the field direction.
Only one diagram shows both the correct concentric-circle pattern and the field direction consistent with the shown current direction.
✅ Answer: (D)
The direction of these field circles is given by the right-hand grip rule: thumb pointing along the current, fingers curling in the field direction.
Only one diagram shows both the correct concentric-circle pattern and the field direction consistent with the shown current direction.
✅ Answer: (D)
▶️ Answer/Explanation
A current-carrying wire produces a magnetic field made up of concentric circles centred on the wire.
The direction of these field lines is found using the right-hand grip rule, which for current out of the page gives anticlockwise circles.
Diagram D correctly shows this concentric, anticlockwise field pattern.
✅ Answer: (D)
The direction of these field lines is found using the right-hand grip rule, which for current out of the page gives anticlockwise circles.
Diagram D correctly shows this concentric, anticlockwise field pattern.
✅ Answer: (D)
▶️ Answer/Explanation
The magnetic field around a straight current-carrying wire forms concentric circles around the wire.
The direction of these field lines is given by the right-hand grip rule, based on the direction of current flow.
For current flowing into the page, applying the right-hand rule gives the pattern and direction shown in diagram A.
✅ Answer: (A)
The direction of these field lines is given by the right-hand grip rule, based on the direction of current flow.
For current flowing into the page, applying the right-hand rule gives the pattern and direction shown in diagram A.
✅ Answer: (A)
▶️ Answer/Explanation
The magnetic field around a straight current-carrying wire forms concentric circles centred on the wire.
Using the right-hand grip rule, with the current directed into the page, the magnetic field circles point clockwise when viewed from the reader’s perspective.
✅ Answer: (A)
Using the right-hand grip rule, with the current directed into the page, the magnetic field circles point clockwise when viewed from the reader’s perspective.
✅ Answer: (A)