Question
How does the short circuit form? What is its effect?
✓
Answer
- The household electrical connections mainly consist of live, neutral and earth wires.
- The potential difference between live and neutral wires is around 220 V.
- Sometimes, due to fault in the electrical appliances or damage of the insulating coating around the two wires i.e., neutral and live, the two wires come in contact with each other and large current flows through them causing short circuit.
- Large amount of heat is produced due to flow of this large current. Any inflammable material like wood, plastic, cloth, etc. present around the short-circuited place can catch fire.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Observe the diagram of menstrual cycle and answer the following questions:
(1) What is the period of menstruation?
(2) On which day does ovulation occur during menstrual cycle?
(3) During which period is corpus luteum active during menstrual cycle? Which hormones are secreted by corpus luteum ?
(4) In menstrual cycle which reproductive organs undergo changes?
(5) Which period is said to be period of regeneration of endometrium?
(6) Which period is said to be period of secretions of glands in endometrium?
(1) What is the period of menstruation?
(2) On which day does ovulation occur during menstrual cycle?
(3) During which period is corpus luteum active during menstrual cycle? Which hormones are secreted by corpus luteum ?
(4) In menstrual cycle which reproductive organs undergo changes?
(5) Which period is said to be period of regeneration of endometrium?
(6) Which period is said to be period of secretions of glands in endometrium?
The schematic of hydroelectric plant is shown in Figure. Water from about middle of the total height of the dam is taken to the turbine, as shown by point B in the diagram.
(i) With reference to point B, potential energy of how much water reservoir in the dam will be converted into kinetic energy?
(ii) What will be the effect on electricity generation, if the channel taking water to turbine starts at point A?
(iii) What will be the effect on electricity generation, if the channel taking water to turbine starts at point C?
(i) With reference to point B, potential energy of how much water reservoir in the dam will be converted into kinetic energy?
(ii) What will be the effect on electricity generation, if the channel taking water to turbine starts at point A?
(iii) What will be the effect on electricity generation, if the channel taking water to turbine starts at point C?
What are the objectives of disaster management?
Explain the need and importance of space missions.
Bring out the contribution of India’s space missions.
Explain the reaction given in the figure.
Identify the phylum of the given animal and write any two characteristics of this phylum.
What is meant by latent heat? How will the state of matter transform if latent heat is given off?
Explain the role of district disaster control unit
after occurrence of any disaster.
Metal $A$ burns in air, on heating, to form an oxide $A_2O_3$ whereas another metal $B$ burns in air only on strong heating to form an oxide $BO.$ The two oxides $A_2O_3$ and $BO$ can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.
→- What is the nature of oxide $A_2O_3?$
- What is the nature of oxide $BO?$
- Name one metal like $A.$
- Name one metal like $B.$