JEE MainPhysicsElectromagnetic InductionMCQ+4 / −1
A transformer has an efficiency of and works at and . If the secondary voltage is , then the current in the secondary coil is :
- A
- B
- C
- D
More from Electromagnetic Induction
- A coil of 200 turns and area is rotated at half a revolution per second and is placed in uniform magnetic field of perpendicular to axis of rotation of the coil. The maximum voltage generated in the…2024 · Numerical
- Two conducting circular loops A and B are placed in the same plane with their centres coinciding as shown in figure. The mutual inductance between them is: Includes diagram2024 · MCQ
- The current in an inductor is given by where is in second. The magnitude of induced emf produced in the inductor is . The self-inductance of the inductor …2024 · Numerical
- In a coil, the current changes from to in and induces an emf of . The self inductance of the coil is :2024 · MCQ
- A square loop of side being moved towards right at a constant speed of as shown in figure. The front edge enters the wide magnetic field at . The value of induced emf in… Includes diagram2024 · MCQ
- A rectangular loop of length and width is placed at to a magnetic field of . The loop is removed from the field in . The average emf induced in the loop during…2024 · MCQ
- Two coils have mutual inductance . The current changes in the first coil according to the relation , where and rad/s. The…2024 · Numerical
- Match List I with List II Choose the correct answer from the options given below: Includes table2024 · MCQ