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A direct current source of 2.4 V is connected across the primary turns of a step-up transformer. If ratio of the primary to that of the secondary turns in the transformer is given to be 1 : 50, the induced emf in the secondary winding of the transformer will be
  • a)
    0.24 V
  • b)
    0 V
  • c)
    24 V
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A direct current source of 2.4 V is connected across the primary turns...
Given Data:
- Direct current source voltage across primary turns: 2.4 V
- Ratio of primary turns to secondary turns: 1 : 50

Calculating Induced EMF:
- The induced EMF in the secondary winding can be calculated using the formula:
Induced EMF = (Primary voltage) x (Ratio of secondary turns/ Ratio of primary turns)
- Given the primary voltage is 2.4 V and the turns ratio is 1:50, the induced EMF in the secondary winding would be:
Induced EMF = 2.4 V x (50/1) = 120 V

Conclusion:
- The induced EMF in the secondary winding of the transformer will be 120 V.
- Therefore, the correct answer is option 'B' which states 0 V, which is incorrect based on the calculations.
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Community Answer
A direct current source of 2.4 V is connected across the primary turns...
Since the transformer is an AC device, it will not work with the DC circuit.
Therefore, the induced EMF will be zero.
Therefore, it is the correct option.
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A direct current source of 2.4 V is connected across the primary turns of a step-up transformer. If ratio of the primary to that of the secondary turns in the transformer is given to be 1 : 50, the induced emf in the secondary winding of the transformer will bea)0.24 Vb)0 Vc)24 Vd)None of theseCorrect answer is option 'B'. Can you explain this answer?
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