diff --git a/electronics/calculate_resistence_in_parallel.py b/electronics/calculate_resistence_in_parallel.py
new file mode 100644
index 000000000000..56aebe5fc798
--- /dev/null
+++ b/electronics/calculate_resistence_in_parallel.py
@@ -0,0 +1,14 @@
+def calculate_resistence_in_parallel(resistors_in_parallel: list) -> float:
+    """
+    Calculate total resistance of resistors used in parallel
+    >>> calculate_resistence_in_parallel([200, 470, 220])
+    85.67
+    """
+    total = sum(1 / val for val in resistors_in_parallel)
+    return round(1 / total, 2)
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()