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# Conservation of Energy Demo

APPH12-HBYCEK

A student builds the circuit shown and uses it for a demonstration of Kirchhoff’s Loop Rule (Conservation of energy). The student plans to connect three voltmeters across the three resistors.

One voltmeter, ${ V }_{ 1 }$, should read the same electric potential as the voltage source. The other two voltmeters ${ V }_{ 2 }$ and ${ V }_{ 3 }$ should sum together to equal the potential difference of the source.

Which of the choices below is a possible configuration of the three voltmeters?

A

${ V }_{ 1 }$: Points 1 to 2

${ V }_{ 2 }$: Points 3 to 4

${ V }_{ 3 }$: Points 5 to 6

B

${ V }_{ 1 }$: Points 1 to 2

${ V }_{ 2 }$: Points 4 to 5

${ V }_{ 3 }$: Points 5 to 6

C

${ V }_{ 1 }$: Points 1 to 8

${ V }_{ 2 }$: Points 2 to 6

${ V }_{ 3 }$: Points 3 to 5

D

${ V }_{ 1 }$: Points 1 to 8

${ V }_{ 2 }$: Points 4 to 5

${ V }_{ 3 }$: Points 6 to 7