Question

Kirchhoff's Junction Rule is simply a statement of the conservation of

charge

energy

potential

work

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Question 21 pts

As I make any loop around a circuit, the sum of all the changes in __________________ is zero.

potential

current

charge

resistance

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Question 31 pts

How does Kirchoff's loop rule relate to the gravitational analog of potential?

If I come back to where I started, my elevation gain plus elevation loss must equal zero.

If I come back to where I started, my energy gain plus energy loss must equal zero.

If I come back to where I started, my current gain plus current loss must equal zero.

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Question 41 pts

What does Doc Physics do to "define" a current?

He labels magnitude and direction.

He labels magnitude only.

He labels direction only.

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Question 51 pts

What if you accidentally define a current in the wrong direction?

No big deal, you'll just get a negative current with the correct magnitude.

No big deal, you'll get the right answer.

You will have to start over.

You should change your major.

Answer 1

1) charge

2) potentail

3) If I come back to where I started, my energy gain plus energy loss must equal zero.

4) He labels direction only.

5) No big deal, you'll just get a negative current with the correct magnitude.

Because, According junction law sum of currents into the junction must be equal to sum of the currents flowinf out of the junction.

According to Kirchoff's loop law the sum of potential changes across circuit elements must be equal to zero ina closed loop.