Question

Kirchhoff's second law is based on the law of conservation of
(A). Charge
(B). Energy
(C). Momentum
(D). Sum of mass and energy

Answer 1

- Hint – In order to deal with this question first we will state Kirchhoff's second law, then according to its property and on the basis of what this law can be used for we will select the correct option from the given set of options.

Complete step-by-step solution -

Kirchcoff 's Law or Circuit Laws consists of two equality mathematical equations concerned with resistance, current , and voltage in the electric circuit lumped product form. The rules are central to the principle of circuiting. They measure how current flows and voltages in a circuit differ by a loop. The German physicist Gustav Robert Kirchhoff contributed to the basic analysis of electrical circuits.
There are two rules in this respect:
The first law of Kirchhoff, also known as the current law of the Kirchhoff (KCL), states that the current flowing into a node must be equal to the real current flowing out of the node. That is a product of the conservation of charges.
The second law of Kirchhoff, also known as the Kirchhoff's voltage law (KVL), specifies that the sum of all voltages in any circuit through a closed loop must be equal to zero. It again is a product of the reduction of charges and therefore energy efficiency.
Kirchhoff's second law states, "The algebraic sum of the potential differences in a circuit loop must be zero". This in simple language means that, if there is a source (like battery) and couple of impedances (like the resistors, inductors & capacitors) in a closed loop circuit, the voltage supplied by the source is equal to the potential differences across all the other elements. So the supplied voltage is equal to the used voltage. So, the energy supplied is equal to the energy consumed.
Hence, Kirchhoff's second law is based on the law of conservation of energy.
So, the correct answer is option B.

Note- The laws of Kirchhoff are used to help us understand how the voltage and current function inside a circuit. We can also be used for studying complex circuits that can not be reduced to one resistance equivalent. Kirchhoff invented two primary rules. Regardless of its composition and function, Kirchhoff 's rules extend to any chain. Although the arrangement of elements is always simple in parallel and sequence, the execution of Kirchhoff 's laws is not always straightforward. The loop and junction rules may be applied to solve current in a circuit.