Example $2$: A strain gauge has a nominal resistance of $120$ and a gauge factor of $2\mathrm{.}14.$ If it is used in a quarter bridge with the other resistors being $120$ and with a supply voltage of $2$ V$,$ what will the strain be is V$0$ is $6$ mV$?$

Example $3$: A hollow cylinder load cell has an outside diameter of $2\mathrm{.}5$ cm and a wall thickness of $2$mm$.$ It is made of aluminium which has a modulus of elasticity of $69$ Gpa and a Poisson$$s ration of $0\mathrm{.}3.$ It is instrumented with four active gauges, each with a nominal $110$ resistance and a gauge factor of $2\mathrm{.}4$ and a $10$ V power supply. What is the output when $16$ kN of force is applied?