Question 553: Current Electricity

Question

Kirchhoff's current and voltage law are respectively based on the conservation of

Accepted Answer

Kirchhoff's laws are fundamental principles in electrical circuit theory that are based on the conservation of certain physical quantities. Let's understand the principle behind each law to select the correct option:
Kirchhoff's Current Law (KCL)
states that the total current entering a junction (or a node) in an electrical circuit equals the total current leaving the junction. This law is based on the principle of conservation of
charge
. According to this principle, charge cannot be created or destroyed in an electrical circuit, which means the sum of currents entering a node (where these currents are considered positive) and the sum of currents leaving the node (considered negative) must equal zero. Thus, for KCL, the conservation principle involved is
charge
.
Kirchhoff's Voltage Law (KVL)
states that the total voltage around any closed loop in a circuit must be zero. This law is derived from the principle of conservation of
energy
. It means that the sum of all electrical potential differences (voltage) around any closed loop must equal zero, as the total energy gained by charges in traveling around a loop must equal the total energy lost. Thus, for KVL, the conservation principle involved is
energy
.
Therefore, the correct option is:
Option C: charge, energy

Answer

momentum, charge

Answer

energy, charge

Answer

charge, energy

Answer

charge, momentum

Current Electricity

Kirchhoff's current and voltage law are respectively based on the conservation of

Choose the correct answer: