In a closed loop circuit, if the sum of the currents entering a junction is 10A
Practice Questions
Q1
In a closed loop circuit, if the sum of the currents entering a junction is 10A and the sum of the currents leaving the junction is 6A, what is the current flowing through the junction?
4A
6A
10A
16A
Questions & Step-by-Step Solutions
In a closed loop circuit, if the sum of the currents entering a junction is 10A and the sum of the currents leaving the junction is 6A, what is the current flowing through the junction?
Correct Answer: 4A
Step 1: Understand that a junction is a point where currents can enter or leave a circuit.
Step 2: Note that the total current entering the junction is 10A.
Step 3: Note that the total current leaving the junction is 6A.
Step 4: According to Kirchhoff's current law, the current that enters a junction must equal the current that leaves it plus any current that flows through it.
Step 5: To find the current flowing through the junction, subtract the current leaving from the current entering: 10A (entering) - 6A (leaving) = 4A.
Step 6: Conclude that the current flowing through the junction is 4A.
