
The Kirchhoff’s second law ($\sum R = \sum E$), where the symbols have their usual meanings, is based on
A) Conservation of momentum
B) Conservation of charge
C) Conservation of potential
D) Conservation of energy
Answer
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Hint:This is a theoretical question and it is from the current electricity part. Apply the definition of Kirchhoff’s second law to find the correct answer.
Complete answer:
Kirchhoff’s first law: The sum of current entering the junction is equal to the sum of current leaving the junction. So, it is based on the conservation of charge.
Kirchhoff’s second law: The algebraic sum of potential difference in a closed circuit is zero. So, it is based on the conservation of energy.
Hence, the correct option is Option (D) Conservation of energy.
Additional Information:
Two equalities known as Kirchhoff's circuit laws deal with the current and potential differences in electrical circuits. German physicist Gustav Kirchhoff came up with it in 1845.
Currents at a circuit junction are governed by Kirchhoff's first law. It says that at a junction in an electrical circuit, the total amount of currents going in and out of the junction are equal.
According to Kirchhoff's second law, the voltages across the elements in a circuit add up to zero if you loop in the circuit. This law is also called the voltage rule or the loop theorem.
Note: To apply Kirchhoff’s Voltage Law in this circuit, the following steps are needed: (1) Calculate the circuit's overall resistance (2) the circuit's overall current (3) the current flowing through each resistor (4) the voltage drop across each resistor
Complete answer:
Kirchhoff’s first law: The sum of current entering the junction is equal to the sum of current leaving the junction. So, it is based on the conservation of charge.
Kirchhoff’s second law: The algebraic sum of potential difference in a closed circuit is zero. So, it is based on the conservation of energy.
Hence, the correct option is Option (D) Conservation of energy.
Additional Information:
Two equalities known as Kirchhoff's circuit laws deal with the current and potential differences in electrical circuits. German physicist Gustav Kirchhoff came up with it in 1845.
Currents at a circuit junction are governed by Kirchhoff's first law. It says that at a junction in an electrical circuit, the total amount of currents going in and out of the junction are equal.
According to Kirchhoff's second law, the voltages across the elements in a circuit add up to zero if you loop in the circuit. This law is also called the voltage rule or the loop theorem.
Note: To apply Kirchhoff’s Voltage Law in this circuit, the following steps are needed: (1) Calculate the circuit's overall resistance (2) the circuit's overall current (3) the current flowing through each resistor (4) the voltage drop across each resistor
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