2. Determine the current / in the circuit of Figure P2. 350 k2 30 V
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PRESENCE OF SOURCE:
In the presence of sources all the passive elements which are R, L and C always absorb energy than the current enters at the positive terminal of R, L, and C.
ABSENCE OF SOURCES:
In the absence of sources, energy storage elements (L and C) will deliver the energy to the energy dissipated element, while delivering energy current enters at the negative terminal of (L and C) elements whereas in resistor (R) current always enters at the positive terminal.
KIRCHHOFF’S LAW:
KCL: The algebraic sum of all currents at a node is zero. Kirchhoff's current law is applicable for active and passive networks as well as linear & non-linear networks. This law is based on Conservation of Charge.
KVL: The algebraic sum of all voltages in a closed path is zero. Kirchhoff's voltage law is applicable for active and passive networks as well as linear & non-linear networks. This law is based on the conservation of energy.
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