Write a note on: i. Electric devices ii. Electronic devices - Vidyadip

Question

Write a note on:
i. Electric devices
ii. Electronic devices

✓

Answer

i. Electric devices:

These devices convert electrical energy into some other form.
Examples: Fan, refrigerator, geyser etc. Fan converts electrical energy into mechanical energy. A geyser converts it into heat energy.
They use good conductors (mostly metals) for conduction of electricity.
Common working range of currents for electric circuits is milliampere (mA) to ampere.
Their energy consumption is also moderate to high. A typical geyser consumes about 2.0 to 2.50 kW of power.
They are moderate to large in size and are costly.

ii. Electronic devices:

Electronic circuits work with control or sequential changes in current through a cell.
A calculator, a cell phone, a smart watch or the remote control of a TV set are some of the electronic devices.
Semiconductors are used to fabricate such devices.
Common working range of currents for electronic circuits it is nano-ampere to µA.
They consume very low energy. They are very compact, and cost effective.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in Detail" from Semiconductors→Semiconductors — all question types→Physics STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

Why is a minimum two stage rocket necessary for launching of a satellite?

Focal power of the eye lens of a compound microscope is 6 dioptre. The microscope is to be used for maximum magnifying power (angular magnification) of at least $12.5.$ The packing instructions demand that length of the microscope should be $25\ cm.$ Determine minimum focal power of the objective. How much will its radius of curvature be if it is a biconvex lens of $n = 1.5.$

Draw and explain the position-time graph of:

An object at rest.
An object moving with uniform velocity along positive x-axis.
An object moving with uniform velocity along negative x-axis.
An object moving with non-uniform velocity.
An object performing oscillatory motion with constant speed.

A shell of mass $3 \ kg$ is dropped from some height. After falling freely for $2$ seconds, it explodes into two fragments of masses $2 \ kg$ and $1 \ kg.$ Kinetic energy provided by the explosion is $300 J.$ Using $g = 10 \ m/s^2,$ calculate velocities of the fragments. Justify your answer if you have more than one options.

(i) State the conditions under which a rainbow can be seen.
(ii) Explain the formation of a primary rainbow. For which angular range with the horizontal is it visible?
(iii) Explain the formation of a secondary rainbow. For which angular range with the horizontal is it visible?
(iv) Is it possible to see primary and secondary rainbow simultaneously? Under what conditions?

Explain what is meant by phase of a wave.

Determine the binding energy of satellite of mass $1000 \ kg$ revolving in a circular orbit around the Earth when it is close to the surface of Earth. Hence find kinetic energy and potential energy of the satellite. $($Mass of Earth $= 6 \times 10^{24} \ kg,$ radius of Earth $= 6400 \ km;$ gravitational constant $G = 6.67 \times 10^{-11} N m^2/kg^2)$

State advantages and disadvantages of amplitude modulation.

State and prove Gauss’ law of electrostatics.

Draw neat diagrams showing schematic electronic structure of:
i. A pentavalent atom [Antimony (Sb)]
ii. A trivalent atom [Boron (B)]