Question

3. Name the on-ott' mechanism in any electrical er .
4. Which material is used for making the handle of a screw driver and pliers ?
5. Name the material that is commonly used for making electric wires and cables.
B SHORT-ANSWER QUESTIONS : Answer in 10-15 words
1. How are the cells connected in a torch ? What is such a combination called?
2. What is meant by a closed electrical circuit ?
3. Why does a fused bulb not glow ?
4. Differentiate between a conductor and an insulator.
5. Can electric wires be covered with aluminium foil instead of rubber or PVC ? Give reasons in support of
your answer.
C LONG ANSWER TYPE QUESTIONS : Answer in 20-25 words
1. Name the source of electricity in a torch. Draw a diagram showing the inner view of that source.
2. What is meant by a series combination of cells ? Illustrate this by giving a suitable diagram.
3. How does electricity flow in an electric circuit ? What is meant by an open circuit ?
4. What is the role of electric switch in a circuit ? What kind of material is used for making the body I casino
of electrical switches ?
5. Differentiate between conductors and insulators. Give one example of each.
D
TICK (V) THE ODD-ONE OUT GIVING REASON
1. Dry cell, Zinc container, Zinc oxide, Carbon rod
2. Solar cell, Dry cell, Storage cell, Hydropower plant, Electrolytic cell
3. Silver, Graphite, Quartz, Brass, Gold
4. Rubber, Metals, Alloys, Graphite, Wet clothes
Dukun alolle Switch schlicht bulb Thread​

Answer 1

Answer:

BAL so many questions keepy number and ask me 9668853465