docs: Add circuit diagram and improve Wheatstone bridge documentation

Author: sharanyas06

electronics/wheatstone_bridge.py

@@ -6,13 +6,32 @@ 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:
-
-    ---------------
-    |Rx=(R2/R1)*R3|
-    ---------------
+    Calculate the unknown resistance (Rx) in a Wheatstone bridge circuit.
+
+    A Wheatstone bridge is an electrical circuit used to precisely measure 
+    an unknown resistance. This function calculates Rx when the three other 
+    resistances in the bridge are known.
+
+    Circuit Diagram:
+    
+         R1         R2
+      +--/\/\/--+--/\/\/--+
+      |         |         |
+     Vin       Vg        Vout
+      |         |         |
+      +--/\/\/--+--/\/\/--+
+         R3        Rx
+    
+    This solver uses the balanced bridge formula:
+    Rx = (R2/R1) × R3
+    
+    Args:
+        resistance_1 (R1): First known resistance
+        resistance_2 (R2): Second known resistance
+        resistance_3 (R3): Third known resistance
+    
+    Returns:
+        float: The calculated unknown resistance (Rx)
 
     Usage examples:
     >>> wheatstone_solver(resistance_1=2, resistance_2=4, resistance_3=5)