Identify this device <img src='data:image/png;base64,[encoded data, 45156 characters]'/>
SILICON DIODE
LIGHT EMITTING DIODE
CAPACITOR
RESISTOR
ANSWER: 2

What is the best material for the switch(golden colour part) <img src='data:image/jpeg;base64,[encoded data, 7468 characters]'/>
WOOD
PLASTIC
COPPER
GLASS
ANSWER: 3

In this circuit, what is R? <img src='data:image/png;base64,[encoded data, 7688 characters]'/>
RELAY
CAPACITOR
ROAD
RESISTOR
ANSWER: 4

What is the output voltage? <img src='data:image/png;base64,[encoded data, 8776 characters]'/>
5 Volts
1 Volt
2.5 Volts
0 Volts
ANSWER: 3