Physics (AS & A Level) · May / June 2017 · Paper 13 · Question 18

Two wires with the same Young modulus E and cross-sectional area A, but different lengths L, are subject to different tensile forces F. The extension e of each wire is the same. The column headings in the table show four different quantities. Which quantities have the same value and which quantities have different values for the two wires? [table: columns \frac{FL}{e}, \frac{Ae}{L}, \frac{E}{FL}; rows A: different, different, same; B: different, same, same; C: same, different, different; D: same, different, same]

1. Adifferent, different, same
2. Bdifferent, same, same
3. Csame, different, different
4. Dsame, different, same

As printed in the paper