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The mutual inductance of an induction coil is 5 H. In the primary coil, the current reduces from 5 A to zero in 10-3s. What is the induced emf in the secondary coil ?
- a)2500 V
- b)25000 V
- c)2510 V
- d)Zero
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The mutual inductance of an induction coil is 5 H. In the primary coil...
Most Upvoted Answer
The mutual inductance of an induction coil is 5 H. In the primary coil...
Given:
Mutual inductance (M) = 5 H
Current in primary coil (I1) = 5 A
Time taken for current to reduce to zero (t) = 10^-3 s
To find:
Induced emf in the secondary coil (E2)
Formula:
The induced emf in the secondary coil is given by the formula:
E2 = -M(dI1/dt)
where, dI1/dt is the rate of change of current in the primary coil.
Calculation:
dI1/dt = (5 - 0)/10^-3 = 5000 A/s
Using the formula, we get:
E2 = -5 × 5000 = -25000 V
Since the negative sign indicates the direction of the induced emf, the magnitude of the induced emf in the secondary coil is 25000 V.
Therefore, the correct answer is option B) 25000 V.
Mutual inductance (M) = 5 H
Current in primary coil (I1) = 5 A
Time taken for current to reduce to zero (t) = 10^-3 s
To find:
Induced emf in the secondary coil (E2)
Formula:
The induced emf in the secondary coil is given by the formula:
E2 = -M(dI1/dt)
where, dI1/dt is the rate of change of current in the primary coil.
Calculation:
dI1/dt = (5 - 0)/10^-3 = 5000 A/s
Using the formula, we get:
E2 = -5 × 5000 = -25000 V
Since the negative sign indicates the direction of the induced emf, the magnitude of the induced emf in the secondary coil is 25000 V.
Therefore, the correct answer is option B) 25000 V.
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The mutual inductance of an induction coil is 5 H. In the primary coil, the current reduces from 5 A to zero in 10-3s. What is the induced emf in the secondary coil ?a)2500 Vb)25000 Vc)2510 Vd)ZeroCorrect answer is option 'B'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The mutual inductance of an induction coil is 5 H. In the primary coil, the current reduces from 5 A to zero in 10-3s. What is the induced emf in the secondary coil ?a)2500 Vb)25000 Vc)2510 Vd)ZeroCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The mutual inductance of an induction coil is 5 H. In the primary coil, the current reduces from 5 A to zero in 10-3s. What is the induced emf in the secondary coil ?a)2500 Vb)25000 Vc)2510 Vd)ZeroCorrect answer is option 'B'. Can you explain this answer?.
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