 # Class 10 Magnetic effects of current - Practice Worksheet

## One marks questions

Question 1 How can you show that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire increases?

Question 2 What is the advantage of the third wire of earth connection in domestic appliances?

Question 3 How is the strength of the magnetic field at a point near a wire related to the strength of the electric current flowing in the wire?

Question 4 On what effect of an electric current does an electromagnet work?

## Two marks questions

Question 5. With the help of a neat-diagram, describe how you can generate induced current in a circuit.

Question 7 List in tabular form two major differences between electric motor and electric generator.

Question 8 Explain the function of earth wire. Why is it necessary to earth metallic appliances?
Question 9 All household appliances are connected in parallel. List two advantages of this type of arrangement.

## Three marks questions

Question 10 Explain briefly two different ways to induce current in a coil. State the rule which determines direction of induced current.
Question 11 (a) A stationary charge is placed in a magnetic field. Will it experience force? Give reason and justify your answer.
(b) On what factors does the direction of force experienced by a current carrying conductor when placed in a magnetic field depends?
(c)  Under what conditions is the force experienced by a current carrying conductor placed in a uniform magnetic field is maximum.

Question 12 List four important features of domestic electric circuit. Draw a diagram of common domestic circuit showing live, neutral and earth wires.

Given below are the links of some of the reference books for class 10 Science.

You can use above books for extra knowledge and practicing different questions.

### Practice Question

Question 1 Which among the following is not a base?
A) NaOH
B) $NH_4OH$
C) $C_2H_5OH$
D) KOH
Question 2 What is the minimum resistance which can be made using five resistors each of 1/2 Ohm?
A) 1/10 Ohm
B) 1/25 ohm
C) 10 ohm
D) 2 ohm
Question 3 Which of the following statement is incorrect? ?
A) For every hormone there is a gene
B) For production of every enzyme there is a gene
C) For every molecule of fat there is a gene
D) For every protein there is a gene

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