.. Flashcards

1
Q

Voltage and current are measured in practice using
instruments

A

voltmeters and ammeters

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2
Q

Uses a graduated scale with a
moving pointer to display readings

A

Analog meter

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3
Q

Provides a reading in numbers and
More accurate than analog meters

A

Digital meter

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4
Q

used by manually adjusting
and
switching
between
different ranges of a specific
quantity to get most accurate
reading.

A

Switched Type Multimeter

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5
Q

automatically
adjusting between ranges
of specific parameter or
quantity under test for best
reading.

A

Auto Range
Type
Multimeter

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6
Q

terminal
to
use
to
measure voltage and
resistance.

A

Terminal VΩ

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7
Q

terminal
A is used for

A

current
measurement

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8
Q

the common terminal for
all
measurements

A

COM
terminal

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9
Q

comes from the word circle. ____ is a collection of real components, power
sources, and signal sources, all connected so
current can flow in a complete circle

A

Circuit

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10
Q

If the circle
is complete, if all currents have a path back to
where they came from.
Indicates low resistance

A

Closed circuit

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11
Q

if the circle is not
complete, if there is a gap or opening in the path.
This Indicates high resistance

A

OPEN CIRCUIT

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12
Q

happens when a path of low resistance (ideally zero) is connected (usually
by mistake) to a component.
Zero ohms of resistance

A

SHORT CIRCUIT

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13
Q

VOM

A

VOLT-OHM-MILLIAMMETER

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14
Q

DMM

A

Digital meter

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15
Q

When measuring the current it is important to never place
the probes directly on the two battery terminals. This will
cause a ____

A

short circuit

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16
Q

Connect the _____ to the appropriate
current port either “A” or “mA”.

A

red probe

17
Q

an instrument which is normally part of a
multimeter together with a voltmeter and an ammeter,
and is used to measure the resistance of a component. It
should be placed across the component under test to
measure the resistance of an isolated component or
circuit.

A

ohmmeter

18
Q

Born in Prussia (now Russia), Kirchhoff developed his “laws” while a student in 1845.

A

Gustav Robert Kirchhoff

19
Q

These laws allowed him to calculate the voltages and currents in multiple loop circuits.

A

Kirchhoff’s Law

20
Q

The algebraic sum of the voltages around any loop is zero. In any closed loop in a network, the algebraic sum of the voltage drops (i.e. products of current and resistance) taken around the loop is equal to the resultant e.m.f. acting in that loop.

A

KIRCHHOFF’SVOLTAGE LAW( KVL)

21
Q

Kirchhoff’s first law is based on the law of conservation of charge. Kirchhoff’s current law (KCL) states that the algebraic sum of currents entering a node (or a closed boundary) is zero.

A

KIRCHHOFF’S CURRENT LAW( KCL)