JEE MainPhysicsElectromagnetic InductionNumerical+4 / −1
In the given circuit the sliding contact is pulled outwards such that electric current in the circuit changes at the rate of . At an instant when R is , the value of the current in the circuit will be A.Numerical answer
More from Electromagnetic Induction
- A uniform magnetic field of 0.4 T acts perpendicular to a circular copper disc 20 cm in radius. The disc is having a uniform angular velocity of 10 rad s-1 about an axis through its centre and perpendicular to the disc. What is the…2025 · MCQ
- A conducting bar moves on two conducting rails as shown in the figure. A constant magnetic field B exists into the page. The bar starts to move from the vertex at time t = 0 with a constant velocity. If the induced EMF is E ∝ tn, then… Includes diagram2025 · Numerical
- A coil of area A and N turns is rotating with angular velocity in a uniform magnetic field about an axis perpendicular to . Magnetic flux and induced emf across it, at an instant when …2025 · MCQ
- Consider I1 and I2 are the currents flowing simultaneously in two nearby coils 1 & 2, respectively. If L1 = self inductance of coil 1, M12 = mutual inductance of coil 1 with respect to coil 2, then the value of induced emf in coil 1…2025 · MCQ
- A rectangular loop of sides and , with its sides parallel to the -axis and -axis respectively, moves with a velocity of in the positive axis direction, in a space…2024 · Numerical
- A transformer has an efficiency of and works at and . If the secondary voltage is , then the current in the secondary coil is :2024 · MCQ
- 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