Question

When one applies Kirchhoff loop rule, the algebraic sum
of the potential drops across the cells and resistors is zero.
Why? Write practical applications of this Law.

Answer 1

Answer:

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Explanation:

Answer 2

When one applies Kirchhoff loop rule, the algebraic sum  of the potential drops across the cells and resistors is zero due to charge conservation and also conservation of energy.

Explanation:

• Kirchhoff’s second law, also known as the Kirchhoff’s voltage law (KVL) states that the sum of all voltages around a closed loop in any circuit must be equal to zero.
• This again is a consequence of charge conservation and also conservation of energy.
• The net electromotive force around a closed circuit loop is equal to the sum of potential drops around the loop
• It is termed as Kirchhoff’s Loop Rule, which is an outcome of an electrostatic field that is conservative.
• Hence,  if a charge moves around a closed loop in a circuit, it must gain as much energy as it loses.

• The above can be summarized as the gain in energy by the charge = corresponding losses in energy through resistances

• Mathematically, the total voltage in a closed loop of a circuit is expressed as ∑ V =0

Practical Application of Kirchoff voltage law is wheatstone bridge

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