Electromagnetic Induction questions
610 published questions with worked solutions.
- The coefficients of self induction of two coils are L_1 and L_2.to induce an emf of 2 volt in the coil change of current of 1A...
- The energy stored in a 50 mH inductor carrying a current of 4 A is
- In a coil the e.m.f induced by a change in current from 4A to 8A in 0.1 second is 8 V.the inductance of the coil is
- If the current in the primary coil is reduced from 3A to zero in10 second, then the induced emf in the secondary is 15 × 10^ -3...
- with the decreases of current in the primary coil from 2 ampere to zero value in 0.01 second, the e.m.f. generated in the...
- The coefficients of self-induction of two coils are L_1 = 8mH and L_2 =2mH respectively. The current rises in the two coils at...
- The self inductance of a coil does not depend upon
- The self inductance of a coil is the measure of
- Coefficient of self induction of a coil is the ratio of
- Self inductance of a coil is equal to induced emf in to oppose
- When the rate of change of current is unity. The induced emf is equal to
- Mutual induction is the phenomenon of generation of induced emf in one coil due to the
- The self inductance of coil of 100 turns in which current 5 ampere produce a flux of 50 wb is:
- Two coils A and B are placed in a circuit. When current changes by 8 A in the coil A, the magnetic flux change of 1.6 wb occurs...
- A 200 mH coil carries current of 2A.The energy stored in the magnetic field is
- Two coils P and S have mutual inductance of 5 × 10^ -3 H.If the current in primary is I=10 sin(100 πt)then the maximum value of...
- An e.m.f.0.5 V is developed in secondary coil when current in primary coil changes from 4A to 2A in 200 milli second .The mutual...
- Two coil have mutual inductance 60 mH.At what rate the current in primary should change to induce e.m.f. of 3V in secondary
- Mutual inductance between primary and secondary is 0.5 H. The resistances of primary and secondary are 20Ω and 5Ω respectively....
- A transformer is based on the principal of
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