Free physics question bank
Motional EMF in Translating and Rotating Conductors questions with solutions
Practice Electromagnetic Induction for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
Showing 1–10 of 22 questions
- MCQmediumElectromagnetic Induction
A thin semicircular conducting ring PQR of radius r falls with its plane vertical in a horizontal uniform magnetic field B, as shown. When its downward speed is v, find the potential difference between ends P and R. [Image]
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AIPMT 2014NEET Previous Year
Open question & full solution → - IntegereasyElectromagnetic Induction
A metallic cube of side 15 cm moves along +y at 2 m s⁻¹ in a uniform magnetic field 0.5 T along +z. The equilibrium potential difference between the higher- and lower-potential faces is ______ mV.
JEE Mains11 April 2023Shift 2Evening Shift
Open question & full solution → - MCQmediumElectromagnetic Induction
XPQY is a vertical smooth long loop having a total resistance R where PX is parallel to QY and separation between them is l. A constant magnetic field B perpendicular to the plane of the loop exists in the entire space. A rod CD of length L (L > l) and mass m is made to slide down from rest under the gravity as shown in figure. The terminal speed acquired by the rod is_________m/s.
(g = acceleration due to gravity)
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JEE Mains 202622 January Morning Shift
Open question & full solution → - NumericmediumElectromagnetic Induction
A ceiling fan having 3 blades of length 80 cm each is rotating with an angular velocity of 1200 rpm. The magnetic field of earth in that region is 0.5 G and angle of dip is 30º. The emf induced across the blades is Nπ × 10⁻⁵ V. The value of N is _____ .
JEE Mains 2024 30 Jan Morning Shift
Open question & full solution → - NumericmediumElectromagnetic Induction
A simple pendulum made of mass 10 g and a metallic wire of length 10 cm is suspended vertically in a uniform magnetic field of 2 T. The magnetic field direction is perpendicular to the plane of oscillations of the pendulum. If the pendulum is released from an angle of 60° with vertical, then maximum induced EMF between the point of suspension and point of oscillation is ________ mV. (Take g = 10 m/s²)
JEE Mains 202623 January Morning Shift
Open question & full solution → - NumericeasyElectromagnetic Induction
A rod of length 60 cm rotates with a uniform angular velocity 20 rad s⁻¹ about its perpendicular bisector, in a uniform magnetic field 0.5 T. The direction of magnetic field is parallel to the axis of rotation. The potential difference between the two ends of the rod is ______ V.
JEE Mains 2024 04 Apr Evening Shift
Open question & full solution → - MCQmediumElectromagnetic Induction
A wheel of radius 0.5 m rotates with constant angular velocity 10 rad/s in a magnetic field of 0.1 T perpendicular to the wheel. Calculate emf induced between centre and rim.
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NEET 2019NEET Previous Year
Open question & full solution → - IntegermediumElectromagnetic Induction
A 20 cm metallic rod rotates at 210 rpm about an axis through one end, normal to the rod. A uniform magnetic field B = 0.2 T is parallel to the axis. Find the emf between the centre and the outer ring, in mV. Take π = 22/7.
15 April 2023 Morning Shift
Open question & full solution → - IntegermediumElectromagnetic Induction
A 1 m long metal rod XY completes the circuit shown. The magnetic field is 0.15 T, the circuit resistance is 5 Ω and the rod moves at 4 m s⁻¹. The force required to maintain constant speed is ______ × 10⁻³ N.
JEE Mains10 April 2023Shift 1Morning Shift
Open question & full solution → - MCQmediumElectromagnetic Induction
A square conducting frame of side a is coplanar with a very long straight wire carrying current I. Its nearest edge is a distance x from the wire. The frame moves away from the wire at speed v. To what function of x is the induced emf proportional? [Image]
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AIPMT Cancelled 2015NEET Previous Year
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