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Question
The transformer is used in ______ current circuits.
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Solution
The transformer is used in alternating current circuits.
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RELATED QUESTIONS
Explain the construction and working of the transformer.
State the principle of transformer working with the help of a diagram
The teachers of Geeta’s school took the students on a study trip to a power generating station, located nearly 200 km away from the city. The teacher explained that electrical energy is transmitted over such a long distance to their city, in the form of alternating current (ac) raised to a high voltage. At the receiving end in the city, the voltage is reduced to operate the devices. As a result, the power loss is reduced. Geeta listened to the teacher and asked questions about how the ac is converted to a higher or lower voltage.
1) Name the device used to change the alternating voltage to a higher or lower value. State one cause for power dissipation in this device.
2) Explain with an example, how power loss is reduced if the energy is transmitted over long distances as an alternating current rather than a direct current.
3) Write two values each shown by the teachers and Geeta.
Explain the significance of Lenz’s law to show the conservation of energy in electromagnetic induction.
State the underlying principle of a transformer. How is the large scale transmission of electric energy over long distances done with the use of transformers?
State the principle of a transformer.
Describe the construction and working of a transformer with a neat labelled diagram.
