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ICSE Class 10 Physics Question 8 of 25

Model Paper 1 — Question 21

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Question 3(iii)

The diagram in the figure given alongside shows the core of a transformer and its input and output connections.

The diagram in figure shows the core of a transformer and it's input and output connections. Electromagnetism, Concise Physics Solutions ICSE Class 10.

(a) Is this transformer a step up or step down?

(b) State the material used for the core and describe its structure.

Answer

(a) As this transformer converts 220 V of inputs into 44 V of output so it is reducing the voltage. Hence, it is a step down transformer.

(b) The core is made from thin rectangular laminated sheets of soft iron of T and U shape, placed alternately one above the other and insulated from each other by a paint (or varnish) coating over them which forms a simple rectangular core.