Practice Quiz

Praxis II General Science

Category - Physics

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Charlie claims to his friend that in the circuit he has built, the current he is putting in is reduced by ½ at the end of the circuit, yet no heat is released. This is not possible, because it violates:
  1. Kirchoff’s first law.
  2. Kirchoff’s second law.
  3. Kirchoff’s third law.
  4. Kirchoff’s fourth law.
  5. Kirchoff’s fifth law.
Explanation
Answer: A - Kirchoff’s first law states that current flowing into a point or circuit must be the same as the current flowing out of that point. Kirchoff’s second law governs voltage. There are no 3rd, 4th, or 5th laws.
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