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प्रश्न
Name two factors on which the magnitude of an induced e.m.f. in the secondary coil depends.
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उत्तर
The magnitude of e.m.f. induced in the secondary coil depends on the following two factors:
- The ratio of the number of turns in the secondary coil to the number of turns in the primary coil (i.e., turns ratio).
- The magnitude of e.m.f applied in the primary coil.
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संबंधित प्रश्न
Draw a labeled diagram of a step-down transformer.
The following diagram in Fig. 10.44 shows a coil X connected to a sensitive centre –zero galvanometer G and a coil P connected to a battery through a switch S.
(a) Describe the observation when the switch S is (i) closed suddenly, (ii) then kept closed, (iii) finally opened.
(b) Name and state the law which explains the above observations.
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For an ideal step-down transformer, the quantity which is constant for both the coils is ______.
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- Here, the power factor cos φ ≥ 0, P ≥ 0.
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- The driving force can take away energy out of the oscillator.
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