Circuit Variables and Elements opics include: Units, voltage and current power, electrical resistance, kirchoffs law and circuit analysis for dependent sources. A circuit is an interconnection of electrical elements, including passive elements and active elements. Active circuit elements can deliver a non-zero average power indefinitely.  Some circuit variables and elements are: Voltage: A basic parameter that describes the electrical conditions in a circuit. Current: A variable associated with each circuit element. Power: Represents the power absorbed by the element through which... Show more

Circuit Variables and Elements opics include: Units, voltage and current power, electrical resistance, kirchoffs law and circuit analysis for dependent sources.

A circuit is an interconnection of electrical elements, including passive elements and active elements. Active circuit elements can deliver a non-zero average power indefinitely. 

Some circuit variables and elements are:
Voltage: A basic parameter that describes the electrical conditions in a circuit.
Current: A variable associated with each circuit element.
Power: Represents the power absorbed by the element through which current flows.
Linearity: A property of an element that describes a linear relationship between cause and effect.
Inductor: A passive circuit element that stores energy as a magnetic field and supplies it to the circuit.
Current source: A circuit element that provides a specified amount of current. 

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Electric Circuits Practice Test: Circuit Variables and Elements

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25 Questions

1. The basic unit for luminous intensity is

AmpereRadianCoulombCandela

2. The opposing capacity of materials against the current flow is

ResistanceConductanceInductanceSusceptance

3. Which of the following is a defined quantity?

MoneyPolarityPressureLength

4. ‘Positive Power’ meaning ___________

Power is being delivered to circuitNo power supplyPower is being extracted from circuitInput and output powers are equal

5. The below circuit is valid.

FalseMaybeTrueDon't Know

6. Charge is

UnipolarBipolarTripolarNon – Polar in nature

7. If energy w = 200t²+ 99 et + 2 then calculate at 0.1 sec

149.95149.41148.39148.52

8. All _____________ are loops but _______________ are not meshes

Nodes, BranchesBranches, loopsLoops, MeshesMeshes, loops

9. The algebraic sum of voltages around any closed path in a network is equal to ____________

0Negative polarityInfinity1

10. What is the other name for Dependent sources?

Time response elementsControlled sourcesUncontrolled sourcesSteady state elements

11. If charge q = 3t² + 2 then current is given by

6t6t + 23t23t2 + 2

12. Calculate potential difference between x and y

-4.527v4.527v-4.275v4.275v

13. Separation of charge creates

CurrentFrictionVoltageResistance

14. Inductor is _______________ element.

PolarActiveLinearPassive

15. KCL is based on the fact that

Charge accumulation may or may not be possible.There cannot be an accumulation of charge at a node.Charge accumulation is possible at nodeThere is a possibility for a node to store energy.

16. The symbol used for representing Independent sources

CircleDiamondSquareTriangle

17. Find R-value from the below circuit?

17.5 Ω17.8 Ω17.4 Ω17.2 Ω

18. In a VCIS which is the controlled source and which one is the dependent source?

Both V and I are dependentBoth V and I are controllersV-contorller, I-dependentV-dependent, I-controller

19. Dependent sources are _____________ types.

2341

20. Which of the following is a correct relation?

Tera>Giga>MegaGiga>Mega>TeraMega>Tera>GigaTera>Mega>Giga

21. In an ICVS which is the controlled source and which one is the dependent source?

V-controller, I-dependentV-dependent, I-controllerBoth V and I are dependentBoth V and I are controllers

22. In case of a dependent voltage/current source, the value of this voltage/current source depends on _________

Only on current sourcesVoltage/current source present somewhere in the circuitVoltage/current sources of an external circuitOnly on voltage sources

23. Relation between power, voltage and conductance

V = P2/GP = v2/GP = V2 GV = P2.G

24. I₃ = α v_x. This is _________

Voltage control current sourceCurrent control voltage sourceCurrent control current sourceVoltage control voltage source

25. The value of the voltage controlled current source i_a=βv_a given β=0.3 and v_a=9.5mV.

2.85 mA1.75 mA2.5 mA1.2 mA