NEW
Font size
WorksheetsDirect Current Review
Total questions: 39
Worksheet time: 20mins
What is Static Electricity?
Electricity in motion
A buildup of electrical charge on an object's surface
Electrons in a closed circuit
An invisible magnetic force
What best describes Dynamic Electricity?
Energy stored in a battery
Static electricity on rubber
Electricity in motion or current flow
The ability to do work
What occurs between opposite electrical charges?
They collide
They repel
They attract
They stay neutral
What is the result of interaction between like electrical charges?
Repulsive forces
Magnetic forces
Attraction
Ionization
Which term refers to a force field around a charged object?
Magnetic field
Electromagnetic field
Electrostatic field
Electrical grid
What is the ability of a material to attract certain metals?
Conductance
Magnetism
Resistance
Retentivity
What is Retentivity in magnetism?
The ability to attract metals
The resistance to magnetism
The ability to retain magnetism
The flow of electrons
Which current model assumes flow from positive to negative?
Electron flow
Ionic flow
Current loop
Conventional flow
Which current model reflects actual electron movement(From Negative to Positive)?
Static flow
Electron flow
Conventional flow
Charge reversal
What law expresses the relationship E = IR?
Watt's Law
Kirchhoff's Law
Coulomb's Law
Ohm's Law
What causes electrons to move through a conductor?
Resistance
Electromotive Force
Voltage drop
Magnetism
What is the flow of electrons through a conductor?
Voltage
Resistance
Current
Power
Which term defines the ability to do work?
Voltage
Current
Energy
Power
What is the rate of using or converting energy called?
Current
Energy
Power
Resistance
Which of the following affects conductor resistance?
Shape
Color
Material, Length, Area, Temperature
Speed
What variable resistance device is used to control current?
Rheostat
Potentiometer
Switch
Circuit breaker
What variable resistance device is used to control voltage?
Rheostat
Potentiometer
Thermistor
Fuse
What resistor changes with temperature?
Thermistor
Potentiometer
Rheostat
Free electron
What component varies resistance with light exposure?
Thermistor
Fuse
Photoconductive cell
Capacitor
Which component melts to protect a circuit?
Resistor
Circuit breaker
Fuse
Capacitor
Which component resets to protect circuits?
Fuse
Circuit breaker
Resistor
Thermistor
What component allows an over current for a short period of time before opening the circuit(used near power supplies)?
Fuse
Circuit breaker
Rheostat
Current limiter
What defines the number of circuits a switch can control?
Throw
Pole
Range
Phase
What defines the number of positions a switch can connect?
Pole
Throw
Sweep
Span
What is used to open or close a circuit?
Resistor
Switch
Transistor
Relay
What current flows in only one direction?
Alternating
Inverted
Pulsed
Direct Current (DC)
Which circuit type has components in a single path?
Series
Parallel
Loop
Matrix
Which circuit type splits current among branches?
Series
Parallel
What law says total current into a junction equals total out?
Voltage Law
Kirchhoff's Current Law
Ohm's Law
Flow Law
What law says total voltage in a loop equals zero?
Kirchhoff’s Voltage Law
Coulomb’s Law
Ohm’s Law
Loop Law
What term describes voltage loss across a component?
Voltage gain
Potential energy
Voltage drop
EMF
What does the letter P represent in electrical formulas?
Pressure
Power
Potential
What is the unit of measurement for Power (P)?
Volts (V)
Watts (W)
Amperes (A)
What does the letter I represent in electrical formulas?
Intensity
Impedance
Current
What is the unit of measurement for Current (I)?
Volts (V)
Watts (W)
Amperes (A)
What does the letter R represent in electrical formulas?
Reactance
Resistance
Range
What is the unit of measurement for Resistance (R)?
Watts (W)
Volts (V)
Ohms (Ω)
What does the letter E represent in electrical formulas?
Electrons
Energy
Voltage
What is the unit of measurement for Voltage (E)?
Volts (V)
Amperes (A)
Joules (J)
