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The sum of the currents into a junction equals the sum of the currents out of...

The sum of the currents into a junction equals the sum of the currents out of the junction" is a consequence of:

a.conservation of charge
b.Newton's third law
c.Newton's second law
d.Ohm's law
e.conservation of energy

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Answer #1
a. conservation of charge says charge cannot be created or nor destroyed, therefore the charge that is entering a terminal must equal the charge leaving a terminal
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