The algebraic sum of the currents meeting at a point in a circuit is
The algebraic sum of the currents meeting at a point in a circuit is zero. According to Kirchhoff’s current law (KCL), which states that the total current entering a junction (or node) in a circuit is equal to the total current leaving the junction, the sum of currents at any point in a circuit, considering direction and sign, balances to zero.
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The correct answer is zero (option B). Kirchhoff’s current law (KCL) states that the algebraic sum of currents meeting at a point (node) in an electrical circuit is always zero. This fundamental principle arises from the conservation of electric charge, where any net flow of charge into or out of a node must be zero. Therefore, the sum of currents flowing into the node (considering positive and negative directions) equals the sum of currents flowing out of the node. This law is essential for analyzing and designing electrical circuits, ensuring that current distribution is correctly accounted for at every junction. It allows engineers to predict and verify current flows through complex circuits, facilitating the reliable operation of electrical systems and the troubleshooting of circuit faults based on current measurements.