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Which of the following is/are not true about Kirchoff's voltage or loop law?. I.The algebraic sum of the potential drops in a closed loop equals the sum of the emfs of the batteries. II.The loop law illustrates the law of conservation of energy.
III.The algebraic sum of the currents in all wires meeting at a point is zero.
IV .For a closed loop containing no battering source the algebraic sum of the potential drops is always non-zero A .I, II and IV only
B. II, III only
C .III and IV only.
D.IV only ​

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MathPhys

Answer:

C. III and IV only

Explanation:

Kirchhoff's voltage or loop law says that the sum of voltage drops around a loop must equal the sum of voltage gains. This is based on the fact that energy must be conserved.

Therefore, statements I and II are both true.

Statement III is true, however, it is not part of Kirchhoff's voltage law. Instead it is Kirchhoff's current law.

Statement IV is false. If the voltage gain is zero, then the voltage drop must also be zero.

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