Question EXE.2.SL.TZ0.17
| Date | Example questions Example questions | Marks available | [Maximum mark: 7] | Reference code | EXE.2.SL.TZ0.17 |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Determine, Draw, Explain, State | Question number | 17 | Adapted from | N/A |
Two parallel wires A and B both carry an electrical current into the page.
Draw the magnetic field lines due to A.
[2]
At least one circle centred on centre of wire A
AND
indication of clockwise direction ✓
More than 2 circles with increasing separation between circles from centre outwards (by eye) ✓
State and explain, using your diagram, why a force acts on B due to A in the plane of the paper.
[3]
B lies in magnetic field of A OWTTE ✓
Explained use of appropriate rule together with drawn indication of rule operating in this case ✓
To show that force on B is to left and in plane of paper ✓
OR
Magnetic field lines of B merge with those of A to give combined field line pattern ✓
Sketch of combined pattern to show null point somewhere on line between wires. ✓
Wires will move to reduce stored energy and this is achieved by moving together so force on B is to left ✓
Both wires are 7.5 m long and are 0.25 m apart. The current in both wires is 12 A. Determine the force that acts on one wire due to the other.
[2]
✓
✓