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प्रश्न
Define a Transformer.
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उत्तर
The transformer is a device used for converting low voltage into high voltage and high voltage into low voltage. It works on the principle of electromagnetic induction.
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संबंधित प्रश्न
Name two factors on which the magnitude of an induced e.m.f. in the secondary coil depends.
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A transformer lowers e.m.f. 220 V to 12 volts. If the number of turns in primary are 8800, how many turns are in secondary coil?
A step-down transformer connected to the main supply of 220 V is used to operate 11V,88W lamp. Calculate
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An iron rod of 0.2 cm2 cross-sectional area is subjected to a magnetising field of 1200 Am-1. If the susceptibility of iron is 599, then the magnetic flux produced is ______.
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A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
