A student was given two resistors with no labels. To find the resistance of the resistors, the circuit shown below was assembled. The resistors were placed one at a time between P and Q, and the current readings were recorded. The voltage readings were recorded with no resistors connected and then again with each resistor separately. The results were typed into a spreadsheet, as shown. The student did not fill in the column headings. Which arrangement of the headings would be correct?
- Ae.m.f. / V, V / V, R / $\Omega$, I / mA
- BV / V, e.m.f. / V, R / $\Omega$, I / mA
- CV / V, e.m.f. / V, I / mA, R / $\Omega$
- De.m.f. / V, V / V, I / mA, R / $\Omega$