Write a not on : Electrical discharge.

Write a note on Electric irons.

Write short notes on: Electrical energy generation and environment

In the phenomenon of electric discharge through gases at low pressure,the coloured glow in the tube appears as a result of :

Huge quantities of electricity are discharged in light flashes and temperatures of over ____ "^@C or more can be reached.

The mean free path of the electrons in a discharge tube is 20 cm. The tube itself is 10cm long. What is the length of the Crookes dark space?

What is corona discharge?

Write a short note on different electrical circuit.

Write any five electrical components used in electrical circuit and draw its symbol.

An element occupies group No.16 and period number 2. This element on passing through silence electric discharge forms (A). (A) also reacts with lead sulphide and forms (B). (A) also reacts with BaO_(2) and forms (C). It reacts with H_(2)O_(2) and forms (D). Identify the dement (A), (B), (C) and (D).