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← ScienceWhich kinetic outcome results when thermistors in a Wheatstone bridge circuit experience localized self-heating during bridge balancing?
A)Reduced sensitivity near balance point✓
B)Oscillations due to thermal inertia
C)Increased accuracy with gain control
D)Linear response across temperature range
💡 Explanation
When thermistors self-heat, a temperature gradient between thermistor and environment causes deviation from true external temperature because the Joule heating effect locally increases the resistance less than expected, offsetting the bridge. Therefore reduced sensitivity results, rather than oscillation, accuracy from gain, or linear increase in response because thermal inertia alters dynamics.
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