ICSE Worksheet for chapter-16 Static Electricity class 9

ICSE Worksheet for chapter-16 Static Electricity class 9

Worksheet For class 9

Find ICSE Worksheet for chapter-16 Static Electricity class 9

CLASS-9

BOARD: ICSE

Physics Worksheet - 16

TOPIC: Static Electricity

For other ICSE Worksheet for class 9 Science check out main page of Physics Wallah.

SUMMARY

• Introduction
• Charging by Friction
• Different Types of Charges
• Simple Orbital Model of Atom
• Quantum Nature of Charge
• Explanation of Charge on A Body in Terms of Transfer of Electrons

SECTION 1 – OBJECTIVE

1. When a comb, rubbed on hair, is brought near the bits of paper, it attracts them, because:
   1. The comb has the pointed ends
   2. The comb & the paper bits gets oppositely charged
   3. The paper bits are very light
   4. The comb & the paper bits gets similarly charged
2. Two uncharged bodies when rubbed together get charged, this is because of
   1. Conduction
   2. Induction
   3. Friction
   4. Presence of humidity
3. An ebonite rod is rubbed with fur. Which of the following statements is true?
   1. Electrons move from fur to the ebonite rod
   2. Electrons move from ebonite rod to fur.
   3. Protons move from fur to the ebonite rod.
   4. Protons move from ebonite rod to fur.
4. Which of the following is a conductor of electricity?
   1. Wood
   2. Glass
   3. Ebonite
   4. Human body
5. A gold leaf electroscope is to be charged positively by conduction. It is done by bringing:
   1. A positively charged rod near the disc without touching it.
   2. A positively charged rod in contact with the disc.
   3. A negatively charged rod near the disc without touching it.
   4. A negatively charged rod in contact with the disc.
6. Mercury is a/an ……… while glass is a/an ……
   1. Conductor, insulator
   2. Insulator, conductor
   3. Conductor, conductor
   4. Insulator, insulator
7. In a gold leaf electroscope, its stem is made up of:
   1. Wood
   2. Brass
   3. Glass
   4. Ebonite
8. A glass rod rubbed with silk is brought near the disc of a negatively charged gold leaf electroscope. The divergence of its leaves will:
   1. Decreases
   2. Increase
   3. Remains unchanged
   4. Nothing can be said.
9. 9. A lightning conductor is made up of:
   1. copper
   2. glass
   3. ebonite
   4. wood
10. 10. The charge on a body is +1C. Find the number of electrons in excess or deficit on the body.
    1. 1.6x10 ^-19 excess
    2. 1.6x10 ^-19 deficit
    3. 6.25 x 10 ¹⁸ excess
    4. 6.25 x10 ¹⁸ deficit

SECTION II - SUBJECTIVE

1. Define :
   1. Static electricity
   2. Free electrons
   3. Conservation of charge
2. 2. Charging by friction is accompanied by loss or gain of electrons. In the following cases state which body loses electrons when :
   1. A glass rod is rubbed with silk.
   2. An ebonite rod is rubbed with fur.
3. What do you mean by electrostatic induction? Use it to explain the attraction of small bits of paper by a charged glass rod.
4. Describe a pith ball electroscope. How can a pith ball electroscope be used to detect the presence of charge on a body?
5. Draw a labeled diagram of a gold leaf electroscope.
6. What is lightning conductor? State its use.

Solutions: to worksheet-16 Topic-Static Electricity

Objective Problems: