Kirchhoff's rules

Exercise and reference answers

Questions

1. Question

   At a junction, the current entering

   Choices

   1. equals the current leaving
   2. exceeds the current leaving
   3. is always zero

   Correct choice

   equals the current leaving

2. Question

   Around any closed loop, the algebraic sum of potential changes is

   Choices

   1. the emf
   2. zero
   3. the current

   Correct choice

   zero

3. Question

   The junction rule expresses conservation of

   Choices

   1. energy
   2. momentum
   3. charge

   Correct choice

   charge

4. Question

   A Wheatstone bridge is balanced when

   Choices

   1. R₁/R₂ = R₃/R₄
   2. R₁ = R₂
   3. all four are equal

   Correct choice

   R₁/R₂ = R₃/R₄

Explanation