adding Electric field around a ring.

physics/Electricfield_on_ring.py

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+'''
+ELECTRIC FILED AROUND A RING:-(Ignore the text below for lazy heads:) )
+
+An electric field around any charge distribution can be found by creating an element out of infinitesimal point charges. 
+In the case of a uniformly charged ring, the electric field on the axis of a ring, which is uniformly charged, can be found by superimposing the electric fields of an infinitesimal number of charged points. 
+The ring is then treated as an element to derive the electric field of a uniformly charged disc.
+
+source :- https://www.vedantu.com/jee-main/physics-electric-field-due-to-a-uniformly-charged-ring
+'''
+
+
+
+#VARIABLES TO CONSIDER (always a good pratice).
+
+"""
+@ A uniformly charged ring = Q
+@ Strength of maximum electric field = E
+@ The radius of the ring = R or A(whatever you like to declare)
+
+@ Distance of the point from the centre of the ring at which the electric field is maximum = X
+
+@ The permiability of free space = K= 
+@ THUS EQUATION BECOMES -
+ E = K * Q * X / (X**2 + A**2)**3/2 (Phew.. half are dead by now , That's why i'm here to help)
+"""
+
+
+
+
+# Now the final value of ELectric field
+#E = K * Q * X / (X**2 + R**2)**3/2
+
+def EF_onring(Q:float,X:float,R:float) ->float:
+    """
+    Calculate the electrostatic force of attraction or repulsion
+    between two point charges
+
+    >>> EF_onring(15.5, 20, 15)
+    5706
+    >>> EF_onring(1, 15, 5)
+    4314
+    >>> EF_onring(20, -50, 15)
+    -222
+    >>> EF_onring(-5, -8, 10)
+    40751
+    >>> EF_onring(50, 100, 50)
+    12
+    """
+    return round((8.9875517923 * 10**9) * Q * X / (X**2 + R**2)**3/2)
+
+
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()