MEDIUM
10th ICSE
IMPORTANT
Earn 100

Draw a labelled diagram to show the various components of a step-up transformer.

Important Questions on Electro-Magnetism

MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(C)>Q 29
Name the device used to transform 12 V a.c to 200 V a.c. Name the principal on which it works.
HARD
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(C)>Q 30
Draw a labelled diagram of a step-up transformer and explain how it works. State two characteristics of the primary coil as compared to its secondary coil.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(C)>Q 31
Draw a labelled diagram of a device you would use to transform 200 V a.c to 15 V a.c. Name the device and explain how it works. Give its two uses.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(C)>Q 32

Complete the following diagram of a transformer and name the parts labelled A and B. Name the part you have drawn to complete the diagram. What is the material of this part? Is this transformer a step-up or step down? Give reason.

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MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(C)>Q 33
The diagram below shows the core of a transformer and its input and output connections.
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(a) State the material used for core and describe its structure.
(b) Complete the diagram of the transformer and connections by labelling all parts joined by you.
(c) Name the transformer: Step-up or step down?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(C)>Q 34
The secondary windings of a transformer in which the voltage is stepped down are usually made of thicker wire than the primary. Explain why.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(C)>Q 35
Why is the iron core of a transformer made laminated (thin sheets) instead of being in one solid piece?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(C)>Q 36
In a step-up transformer, the number of turns in the primary are _____ than the number of turns in the secondary.