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In a closed loop circuit, if the sum of the currents entering a junction is 10A

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Question: 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?

Options:

  1. 4A
  2. 6A
  3. 10A
  4. 16A

Correct Answer: 4A

Solution: 

According to Kirchhoff\'s current law, the current flowing into the junction must equal the current flowing out. Therefore, 10A - 6A = 4A is the current flowing through the junction.

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?
  1. 4A
  2. 6A
  3. 10A
  4. 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.
  • Kirchhoff's Current Law – This law states that the total current entering a junction must equal the total current leaving the junction.
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