**Q1: what are the basic electrical circuit elements?**

The three basic circuit elements are resistors, capacitors, and inductors.

**Q2: what is the definition of the term “Electrical Resistance”?**

The electrical resistance of a circuit component or device is defined as the ratio of the voltage applied to the electric current which flows through it.

**Q3: what is the definition of the term “Resistivity”?**

Resistivity is a Material property which measures how strongly this material opposes the flow of electric current at a given temperature.

**Q4: what is the definition of the term “Electrical Conductivity”?**

The electrical conductivity is he inverse of electrical resistivity.

**Q5: are the resistivity and conductivity temperature dependent?**

Yes, the resistivity and conductivity are temperature dependent.

**Q6: what is a capacitor?**

Capacitor is a charge storage device

**Q7: does the capacitor permit passing DC current? Why?**

No, the capacitor didn’t permit passing the DC current.

Reason for this is that capacitor impedance = 1/(2Πfc)

It is known that the F (frequency) of DC current = Zero, so capacitor impedance = 1/Zero = infinity

The capacitor shows large impedance for the DC current, so capacitor will bock passing of DC current.

**Q8: what is the definition of the term “Capacitance”?**

The Capacitance is a measure of the amount of electrical energy stored (or separated) for a given electric potential on a capacitor.

**Q9: what is the inductor?**

An inductor is a device that tries to keep a constant current flowing through itself.

**Q10: what is the definition of the term “Impedance”?**

Impedance is a complex Quantity ( has magnitude and phase angle) characterize the voltage-current relationships in an AC circuit.

**Q11: what is the definition of the term “Admittance”?**

The Admittance is the reciprocal of the impedance.

**Q12: what is the Equivalent Resistance for a group of resistances connected in series?**

R Equivalent = R1+R2+R3+……

**Q13: what is the Equivalent Resistance for a group of resistances connected in Parallel?**

1/R Equivalent = 1/R1+1/R2+1/R3+……

**Q14: what is the measuring unit of Resistance?**

Measuring unit of Resistance is ohm (Ω).

**Q15: what is the Equivalent Capacitance for a group of Capacitors connected in series?**

1/C Equivalent = 1/C1+1/C2+1/C3+……

**Q16: what is the Equivalent Capacitance for a group of Capacitors connected in Parallel?**

C Equivalent = C1+C2+C3+……

**Q14: what is the measuring unit of Resistance?**

Measuring unit of Capacitance is Farad (F) and usually expressed in micro unit as (µF).

I Suggest that when you add a new topic to write the name of the course,which contains the topic in the headline.

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hi where r the next parts of the electric basics.

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