transistors

Transistors act like tiny "____________."

• Electron sources

• Switches

• Batteries

• Bees?

In which circuit does the bulb light up?

• 
• 
• 
• 

Tags

NGSS.MS-ETS1-1

What are the names of the terminals X, Y and Z?

• X = Base, Y = Collector, Z = Emitter

• X = Emitter, Y = Base, Z = Collector

• X = Collector, Y = Base, Z = Emitter

• X = Collector, Y = Emitter, Z = Base

Diagram shows an automatic switch circuit to light up a bulb during the day time. What changes should be done to light up the bulb at night?

• Interchange R₁ and R₃

• Reverse the terminal of the battery

• Replace the npn transistor with a pnp transistor

• Interchange R₁ and the LDR

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Diagram shows a light controlled switch. The alarm will be activated when

• the surrounding is dark

• the surrounding is bright

• the temperature of the surrounding is high

• the temperature of the surrounding is low

Tags

NGSS.MS-ETS1-1

The street lights use electronic control system that switches the lights on when the surrounding is dark. What is the input sensor of the control system?

• A thermistor

• A light emitting diode

• A microphone

• A light dependent resistor

One function of the transistor is to_____________?

• rectify

• amplify

• limit

• control

Tags

NGSS.MS-PS2-5

transistor has 3 electrodes namely

• PNP

• NPN

• Base/ Collector/ Emitter

• Drain/ Gate/ Source

What are the names of the legs on a Bipolar Junction Transistors? (3 Correct)

• Base

• Collector

• Emitter

• Anode

• Gate

Emits light when a current passes through it

• fuse
• diode
• LED
• resistor