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WorksheetsHonors Semiconductor 1: Electronics 1, 1.2, 1.3 Study Guide
Total questions: 47
Worksheet time: 24mins
Electricity is defined as the flow of (__________).
electrons
protons
neutrons
atoms
Electric charges come in two types: (Positive) and (__________).
negative
neutral
magnetic
electric
Protons carry a (positive) charge, while electrons carry a (__________) charge.
negative
neutral
positive
magnetic
The smallest, fixed quantity of charge is the fundamental unit of charge, q, with a value of (__________).
q=1.602×10−19 coulombs (C)
q=9.109×10−31 coulombs (C)
q=6.022×10^23 coulombs (C)
q=3.00×10^8 coulombs (C)
Based on Coulomb's Law, like charges (__________), and opposite charges (__________).
repel, attract
attract, repel
repel, repel
attract, attract
Materials that allow electricity to pass through them with little resistance are called (__________).
conductors
insulators
semiconductors
resistors
Materials that do not allow electricity to pass through them easily are called (__________).
inductors
conductors
semiconductors
resistors
Materials with conductivity between conductors and insulators, using both electrons and (__________) to carry charge, are known as (__________).
holes, semiconductors
ions, superconductors
protons, insulators
atoms, conductors
Ohm's Law is expressed by the formula: V = I x (__________).
R
C
P
T
In this formula, V stands for voltage, I stands for current, and R stands for resistance.
volts, amps, ohms
volts, watts, ohms
volts, amps, joules
volts, coulombs, ohms
Current and voltage are (__________) when resistance remains constant.
directly proportional
inversely proportional
not related
equal
Current and resistance are (__________) when voltage remains constant.
inversely proportional
directly proportional
equal
unrelated
Watt’s Law is used to calculate (__________) in a circuit, with the basic formula P=I×V.
power (wattage)
current (amperage)
resistance (ohms)
voltage (volts)
Power is the rate at which (____) is done or energy is transferred in an electrical circuit.
work
force
current
voltage
Voltage is always a difference in electrical potential between (______).
two points
two wires
two batteries
two circuits
The voltage at a single point measured relative to a common reference point (like ground) uses (___singlescript notation___).
singlescript notation
doublescript notation
phasor notation
matrix notation
Comparing voltages between any two specific points, without assuming a common reference, requires (___Doublescript notation___).
Doublescript notation
Single-script notation
Matrix notation
Vector notation
Kirchhoff’s Current Law (KCL) states that the sum of currents entering a junction must equal the sum of currents (___).
exiting
flowing in the same direction
at the source
at the resistor
Kirchhoff’s Voltage Law (KVL) states that the sum of all voltage drops and rises in any (___) of a circuit is equal to zero.
closed
open
parallel
series
Scenario: A temperature sensor circuit in a car is powered by a 12V battery. The circuit consists of three components in series: a current-limiting resistor (R1), the sensor itself (Rsensor), and a pull-down resistor (R2). You measure the voltage drop across R1 as 2V and the voltage drop across R2 as 4V. Problem: Use KVL to determine the voltage drop across the sensor (Vsensor). What is the voltage drop across the sensor (Vsensor)?
6V
8V
4V
2V
Scenario: A junction (node) on a semiconductor test board has four current paths. Currents I1=50mA and I2=120mA are entering the node. Current I3=80mA and an unknown current I4 are leaving the node. Problem: Use KCL to determine the magnitude and direction of the unknown current I4. What is the value and direction of I4?
I4 = 90mA, leaving the node
I4 = 150mA, entering the node
I4 = 50mA, leaving the node
I4 = 190mA, leaving the node
A series circuit is characterized by having only (______) path for current flow.
one
two
three
multiple
The current (I) is (___) through every component in a series circuit.
consistant
different
zero
alternating
The total equivalent resistance (Req) is calculated by
adding up all the individual resistances
multiplying all the individual resistances
subtracting the smallest resistance from the largest
dividing the largest resistance by the smallest
In a series circuit, the total source voltage (___) across the individual components in proportion to their resistance.
decreases
increases
remains constant
fluctuates
A parallel circuit provides (____) for current to flow.
multiple paths
a single path
no path
one direction
The (____) is the same across all parallel branches and equal to the source voltage.
voltage
current
resistance
power
The total current in a parallel circuit (____) among the different branches, with lower resistance branches drawing more current.
fluxuates
remains constant
is divided
is multiplied
The reciprocal of the total equivalent resistance (1/Req) is equal to the sum of the (____).
the reciprocal resistances
the individual resistances
the voltage drops
the current values
Adding more resistances in parallel (____) the overall equivalent resistance of the circuit.
decreases
increases
does not change
doubles
Series-Parallel circuits are also known as (__combination circuits__).
combination circuits
resistive circuits
open circuits
short circuits
To analyze these complex circuits, you must first break them down into simpler (___) and (____) sections.
series, parallel
resistor, capacitor
positive, negative
input, output
To calculate the total resistance, you systematically reduce the circuit by finding the equivalent resistance of each small (____) group.
section
wire
current
voltage
A common example of a bridge circuit is the (___Wheatstone bridge___).
Wheatstone bridge
Maxwell bridge
Schering bridge
Kelvin bridge
The purpose of a Wheatstone bridge is often to measure an resistance.
unknown
voltage
current
power
A balanced bridge is achieved when the voltage drops on either side of the bridge connection are (___).
equal
different
maximum
zero
When the bridge is perfectly balanced, the current flowing through the central meter will be (__).
Zero
Maximum
Minimum
Infinite
Scenario: A Wheatstone bridge is used to measure a subtle change in resistance of a strain gauge Rx due to mechanical stress. The bridge is balanced, meaning the galvanometer current is zero. The known resistors are R1 = 100Ω, R2 = 500Ω, and the adjustable resistor R3 is set to 2,500 Ω to achieve balance. Problem: Use the balanced bridge equation to determine the resistance of the strain gauge Rx. What is the value of Rx? A. 12,500 Ω B. 1,250 Ω C. 500 Ω D. 5,000 Ω
12,500 Ω
1,250 Ω
500 Ω
5,000 Ω
Fixed resistors have a set value, while (___) (like potentiometers or rheostats) allow the resistance to be adjusted during operation.
Variable resistors
Capacitors
Inductors
Diodes
A (___) is a versatile tool used to measure voltage, current, and resistance.
multimeter
oscilloscope
ammeter
voltmeter
To measure current, the multimeter is connected (___) with the circuit, but to measure voltage, it is connected (___) across the component.
in series, in parallel
in parallel, in series
in series, in series
in parallel, in parallel
An (___) is an electronic instrument that allows you to visualize how a signal behaves over time by plotting (___) on the y-axis and (___) on the x-axis.
Oscilloscope, Voltage, time
Multimeter, Current, frequency
Ammeter, Resistance, amplitude
Voltmeter, Power, wavelength
Signal generators are used to create various waveforms, such as sine, square, triangle, and (___) waves.
Sawtooth
Pulse
Ramp
Noise
Electrostatic Discharge (___) can permanently damage sensitive electronic components.
ESD
LCD
CPU
RAM
ESD protection equipment includes anti-static mats, anti-static bags, and (___Wrist Straps___).
Wrist Straps
Rubber Gloves
Plastic Sheets
Wooden Blocks
A critical safety practice is to always (______) before connecting or making changes to a circuit.
disconnect power
wear gloves
check voltage
tighten screws
Never work in (___) as moisture on your skin reduces its resistance and increases the risk of electrical hazards.
wet conditions
dry conditions
cold conditions
dusty conditions
