Wheatstone Bridge Balance (P/Q = R/S balance condition (no deflection in)
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P/Q = R/S balance condition (no deflection in galvanometer branch)
What each symbol means
| Symbol | What it stands for |
|---|---|
| R_i | Four arms of bridge (Ω) |
| balance | Ig = 0 between midpoints of two voltage dividers |
When to use this
Linear resistors; ideal galvanometer as zero-current detector; DC steady.