Circuit Elements and Ohm’s Law (4C) Practice Test

A wearable biosensor uses a resistive strain gauge ($R=200\ \Omega$) powered by a $5.0\ \text{V}$ supply. During motion, the gauge resistance increases to $250\ \Omega$ while the supply voltage remains constant. How would the current through the gauge change, consistent with Ohm’s Law?

A handheld glucometer applies $0.30\ \text{V}$ across an enzyme-coated test strip that behaves ohmically at the measurement point. The measured current is $6.0\ \mu\text{A}$. If a different strip has twice the resistance under the same voltage, what current is expected?