Question

A step-up transformer has 200 and 3000 turns in its primary and secondary coils respectively. The input voltage given to the primary coil is 90 V. Calculate : (1) The output voltage across the secondary coil (2) The current in the primary coil if the current in the secondary coil is 2·0 A.

Which of the following quantity/quantities remains same in primary and secondary coils of an ideal transformer ? Current, Voltage, Power, Magnetic flux

With the help of a suitable diagram, explain the working of a step-up transformer.

Describe the construction and working of a transformer and hence obtain the relation for (vs/vp) in terms of number of turns of primary and secondary.