Class 10- assignment

CLASS 10

Topic- Magnetic effects of current

Q1 What are the factors on which the strength of magnetic field produced by a current carrying solenoid depends?
Q2 State the advantages of electromagnet over a bar magnet.
Q3 What is the importance of magnetism in the medical field?
Q4 Define- 1) Magnetic field 2) Magnetic lines of force
Q5 How can you prove that electricity produces magnetic effect?
Q6 Explain-1) Fleming's left hand rule 2) Right hand thumb rule
Q7 State an activity to prove that a current carrying conductor when placed in a magnetic field experiences a force.
Q8 What are the similarities between a bar magnet and a current carrying solenoid?
Q9 What are the differences in the construction of a simple motor and a commercial motor?
Q10 What is a commutator? Explain in context of an electric motor.
Q11 What is a magnetic compass needle? How is it useful?
Q12 What effect is produced when current is passed through a circular loop?
Q13 What is a Galvanometer?

Q14 What is electromagnetic induction? How is it related with Fleming's right hand rule?

Q15 What is overloading? When does it occur?

Q16 How many wires are present in a plug? What are their uses?

Q17 Define- 1) Alternating current 2) Direct current

Q18 Explain the construction and working of a DC generator.

INSTRUCTIONS:

1) Submit your copies on Tuesday with Q1-12 of assignment, all inbox questions of NCERT and Q8-12 of back exercise.

2) I'll discuss the problems on Monday.

Writing with a feather

Purpose:

For students to learn about the writing tools used by colonists who utilized the local plant materials, before the invention of pencils and pens.

Materials:

Large feathers (peacock or pheasant feathers are the best)
Scissors or pen knife
10 walnut shells
1 cup water
1/2 teaspoon vinegar
1/2 teaspoon salt
Hammer
Old cloth/rag
Saucepan
Small jar with lid
Strainer

Lab Procedure:

1. Using hammer, crush the shells in the cloth

2. Add the shells and water to the saucepan. Bring to a boil, simmer 45 minutes or until dark brown. (Much of the water will evaporate.)

3. Remove the ink from the burner and let it cool.

4. Strain it into the jar and add vinegar and salt (this preserves the ink).

5. Use scissors or pen knife to cut the end of the feather so it's on an angle (/).

6. Write away!

assignment -6

The World of Living

1) Give 1 example for each of the following:
a) unicellular organism-
b) a herb-
c) flowering plant-

2) Give one word for the following-
a) basic unit of life-
b) plants which survive for only 1 year-
c) removal of waste products from the body-
d) plants which have height of 3 feet to 7 feet-

3) Answer the following-
a) How are animals classified on the basis of reproduction?
b) Draw the structure of Amoeba.
c)Define- 1) Response 2) Stimuli
d) How are plants useful to us?