HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Distinguish between avalanche breakdown and Zener breakdown.

Write a short note on diffusion current across the p-n junction.

What is meant by biasing?

Mention the types of biasing.

Define barrier potential.

List the applications of light emitting diode.

Give the principle of solar cells.

Draw the circuit diagram of a half wave rectifier and explain its working.

Explain the construction and working of a full-wave rectifier.

What is an LED? Give the principle of its operation with a diagram.

Write notes on the photodiode.

Explain the formation of depletion region and barrier potential in PN junction diode.

Explain the working principle of a solar cell. Mention its applications.

The given circuit has two ideal diodes connected as shown in the figure below. Calculate the current flowing through the resistance R₁.

Four silicon diodes and a 10 Ω resistor are connected as shown in the figure below. Each diode has a resistance of 1 Ω. Find the current flows through the 10 Ω resistor.

Determine the current flowing through 3 Ω and 4 Ω resistors of the circuit given below. Assume that diodes D₁ and D₂ are ideal diodes.

In the given figure of a voltage regulator, a Zener diode of breakdown voltage 10 V is employed. Determine the current through the load resistance, the total current and the current through the diode. Use diode approximation.

The materials used in Robotics are ____________.

The alloys used for muscle wires in Robots are ____________.

Mention any two advantages and disadvantages of Robotics.