255 Textbook For Midterm

Question 1

Electric current

Answer 1

Is the time rate of change of charge measured in amperes A

Question 2

Direct current

Answer 2

Flows only in one direction and can be constant or time varying

Question 3

Alternating current

Answer 3

Is a current that changes direction with respect to time

Question 4

Voltage (potential difference)

Answer 4

Is the energy required to move a unit charge from a reference point (-) to another point measured in volts

Question 5

Power

Answer 5

Is the time rate of expending or absorbing energy measured in watts (W)

Question 6

Passive sign convention

Answer 6

Satisfied when the current enters through the positive terminal of an element and p= +vi. If the current enters through the negative terminal p = -vi

Question 7

Energy

Answer 7

The capacity to do work measured in joules (J)

Question 8

Ideal independent source

Answer 8

An active element that provides a specified voltage or current that is completely independent if other circuits elements

Question 9

Ideal dependent source

Answer 9

Is an active element in which the source quantity is controlled by another voltage or current

Question 10

Resistance R

Answer 10

Of an element denotes its ability to resist the flow of electric current measured in ohms

Question 11

Short Circuit

Answer 11

A circuit element with resistance approaching 0

Question 12

Open circuit

Answer 12

Is a circuit element with resistance approaching infinity

Question 13

Conductance

Answer 13

The ability to conduct electric current measures in siemens S or inverse of ohms

Question 14

Short circuit

Answer 14

Is a circuit element with resistance approaching zero

Question 15

Open circuit

Answer 15

Is a circuit element with resistance approaching infinity

Question 16

Branch

Answer 16

Represents a single element such as a voltage source or a resistor

Question 17

Node

Answer 17

Is the point of connection between two or more branches

Question 18

Loop

Answer 18

Closed path in a circuit

Question 19

Series

Answer 19

If they exclusively share a single node and consequently carry the same current

Question 20

Parellel

Answer 20

If two or more elements are connected to the same two nodes and consequently have the same voltage across them

Question 21

Kirchoffs current law

Answer 21

States that the algebraic sum of currents entering a node is 0

Question 22

Kirchoffs voltage law

Answer 22

The algebraic sum of all voltages around a closed path is zero.