What is electrical impendance?

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Impedance (Z) is the vector sum of a circuit's resistance (R) and reactance (X), is expressed in ohms, and is the total opposition to current in an a.c. circuit.

Resistance, expressed in ohms, depends upon the length, cross-sectional area, and resistivity of the conductor.

Reactance, expressed in ohms, can be inductive reactance (XL), capacitive reactance (XC), or a combination (vector sum) of the two.
  • Inductive reactance is directly proportional to the circuit's inductance and the supply frequency.
  • Capacitive reactance is inversely proportional to the circuit's capacitance and the supply frequency.

What is impending motion?

I'm pretty sure it means the motion or movement that is going tohappen. So, if you apply force in a direction to a box, theimpending motion will be sliding or tipping in the d (MORE)