In an experiment, a steel wire is pulled in order to find the Young modulus for steel. The measurement uncertainties are shown below. measurement / uncertainty: - load on wire: $\pm 2\%$ - length of wire: $\pm 0.2\%$ - diameter of wire: $\pm 1.5\%$ - extension: $\pm 1\%$ What is the percentage uncertainty in the Young modulus?
- A1.3%
- B1.8%
- C4.7%
- D6.2%