PUSHBUTTON
What happens when the circuit breaks?
(Regarding the flow of current)
No current flows
True/ False A potentiometer is a variable resistor.
True
The potentiometer is the most common variable resistor.
What are the X and Y midpoint values of a joystick?
A. 0,0
B. 0, 512
C. 1023,1023
D. 512, 512
D. 512, 512
V = IR
Ohm's Law
What does PwC stand for?
PricewaterhouseCoopers
True/ False The pushbutton has connections between each of the pins that are opposite each other.
True
True/ False The Potentiometer is an ammeter that can check current.
False
True/ False A joystick consists of 1 potentiometer.
False
There are 2 potentiometers. One for the X-Axis and 1 for the Y-axis
What happens to current when resistance is decreased?
Current flow increases
What does PWM stand for?
Pulse-width modulation
How do I turn on an LED to 80% brightness? It is connected to pin 11.
A. I cannot
B. digitalwrite(11,80);
C. analogWrite(11,80);
D. analogWrite(11, 204);
D. analogWrite(11,204);
True/ False A potentiometer will function correctly only if connected to a digital PWM pin.
False
What does a voltmeter measure?
Voltage
I would like to build a lighting machine that turns on in the darkness. Which component(s) should I use?
A. Photoresistor
B. Phototransistor
C. Photodiode
D. All of the above
D. All of the above
Which of the following is not true of the potentiometer?
A. It can be used to adjust voltage.
B. It can be used to turn an LED on or off
C. It can be used to dull an LED
D. It is a digital input device
D
A potentiometer is not a digital input device.
What does an ammeter measure?
Current
How many legs does a potentiometer have?
3 legs:
Pin 1 to 5V or GROUND
Pin 2 to 5V or GROUND
Pin 3 to Wiper (Analog pin that would read the input)
"I have no special talents. I am only passionately curious" - _ _ _ _ _ _ _ _ _ _ _ _ _ _
Albert Einstein
What is a photoresistor?
A light-dependent resistor that changes resistance depending on exposure to light.
What is a phototransistor?
A semiconductor that is able to sense light levels and alter the current flowing depending on the level of light it receives.
True/ False The push button has an alternate setup where a resistor is not needed
True
Convert binary 1111 (base 2) to decimal
15 (base 10)
Which famous scientist was born on pi day?
Albert Einstein
How many bits are in a byte
8
True/ False A phototransistor can be connected in any way in the circuit.
False