Refine Wheatstone Bridge explanation (#14031)

* Refine Wheatstone Bridge explanation

Updated docstring to provide a clearer explanation of the Wheatstone Bridge, its balance condition, and applications.

* Update wheatstone_bridge.py

* Correct docstring formatting in wheatstone_bridge.py

Fix formatting in docstring for clarity.

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Fix docstring capitalization and simplify return statement

Corrected capitalization of 'Wheatstone' in the docstring and improved code structure by removing unnecessary else statement.

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Christian Clauss <cclauss@me.com>

electronics/wheatstone_bridge.py

@@ -6,13 +6,22 @@ def wheatstone_solver(
     resistance_1: float, resistance_2: float, resistance_3: float
 ) -> float:
     """
-    This function can calculate the unknown resistance in an wheatstone network,
-    given that the three other resistances in the network are known.
-    The formula to calculate the same is:
+    Wheatstone Bridge is an electrical circuit used to accurately measure
+    an unknown resistance by balancing two legs of a bridge circuit.
 
-    ---------------
-    |Rx=(R2/R1)*R3|
-    ---------------
+    The bridge is said to be balanced when no current flows
+    through the galvanometer connected between the midpoints
+     of the two voltage dividers.
+      Balance condition:
+       R1 / R2 = R3 / R4
+
+      Applications:
+      - Measurement of unknown resistance
+      - Strain gauge circuits
+      - Sensor calibration
+    This function can calculate the unknown resistance in a Wheatstone
+    network, given that the three other resistances
+    in the network are known.
 
     Usage examples:
     >>> wheatstone_solver(resistance_1=2, resistance_2=4, resistance_3=5)