The basic circuit element in a D.C. circuit is:
Correct answer: C. Resistor
- A. Capacitor
- B. Transistor
- C. Resistor
- D. Inductor
Explanation
Resistor is an element which opposes the flow of current ..capacitor is device used to store an electric charge in form of static field separated by 2 insulatorsInductor is also a charge storing device but in form of magnetic fieldTransistor is also a semiconductor device used for amplification and some times rectification..Usage in circuitsResistor is a current limiting device when current of any circutis needs to be reduced then this is usedCapacitor and Inductor charge storing in static and magnetic forms Transistor is used for amplification. Hence resistor is the basic circuit element used in DC circuit.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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