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Ohms
and Kirchhoff's
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Kirchhoff's Laws
Kirchhoff's
Current Law
The
algebraic sum of currents
entering and leaving any
point in a circuit must
equal zero.
Stated
another way
No matter
how many paths into and out
of a single point all the
current leaving that point
must equal the current
arriving at that point.
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Kirchhoff's
Voltage Law
The
algebraic sum of the
voltages around any closed
path is zero.
Stated
another way
The voltage
drops around any closed loop
must equal the applied
voltages. |
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When voltages are opposing
as seen at the right, the
difference is the voltage
applied to the circuit. In
this case 4 volts must be
dropped by the resistors to
equal the applied voltage.
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