What is Electrical Polarity?
What is Electrical Polarity?
Electrical Polarity Definition
Electrical polarity is defined as the state of a body or system relative to another, indicating whether it has positive or negative polarity. 
Importance of Polarity
Polarity is crucial for connecting devices like meters, machines, and batteries correctly.
Current Flow Direction
In a DC circuit, current flows in one direction—from negative to positive polarity—while in an AC circuit, current changes direction every half cycle.
DC Circuit
AC Circuit
Polarity in Voltage Sources
In circuits with multiple voltage sources, the total voltage depends on the polarity of the sources—same polarity adds up, opposite polarity subtracts.
Conventional vs Actual Current Direction
Conventionally, current is assumed to flow from positive to negative, but in reality, it flows from negative to positive due to electron movement.
