Zener Diodes and Their Applications

This video tutorial explores the properties and applications of Zener diodes, focusing on their ability to function as mini solar cells when exposed to light. It explains the flow of current from cathode to anode and how light intensity affects current generation. The video includes a practical demonstration of Zener diodes under various lighting conditions, highlighting the differences in voltage and current when connected in series or parallel circuits. The tutorial concludes with tips on using Zener diodes to create solar cells.

What unique property does a Zener diode exhibit when exposed to light?

• It acts as a capacitor.

• It acts as a mini solar cell.

• It acts as a resistor.

• It acts as an inductor.

How can you identify the cathode of a Zener diode?

• It has no stripe.

• It has a red stripe.

• It has a dark stripe.

• It has a blue stripe.

What factors influence the energy output of a Zener diode?

• The size and shape of the diode.

• The temperature and humidity.

• The type of Zener diode and the amount of light.

• The color of the diode.

What happens to the current generated by a Zener diode when the light intensity increases?

• The current increases.

• The current decreases.

• The current becomes zero.

• The current remains the same.

What is the effect of reversing the connections on a Zener diode?

• The voltage increases.

• The current direction reverses.

• The current stops flowing.

• The diode gets damaged.

What is the voltage generated by a Zener diode under certain conditions in a series circuit?

• 0.2 volts

• 0.1 volts

• 0.3 volts

• 0.4 volts

In a parallel circuit, what happens to the current when Zener diodes are connected?

• The current becomes zero.

• The current decreases.

• The current remains the same.

• The current increases.

How can you increase the voltage output using Zener diodes?

• Connect them in series.

• Connect them in parallel.

• Use a smaller diode.

• Use a larger diode.

What voltage is generated by 14 Zener diodes connected in series under a lamp?

• 5.5 volts

• 3.5 volts

• 7.5 volts

• 6.5 volts

What is the main advantage of connecting Zener diodes in parallel?

• Increased voltage.

• Increased current.

• Decreased capacitance.

• Decreased resistance.