Motional EMF — Previous-Year Questions
5 previous-year questions on Motional EMF, drawn from JEE Mains, JEE Advanced, NEET UG, and CUET papers. Every question carries a worked-out explanation.
Q1. A rod of length 1 m moves at 5 m/s perpendicular to B = 0.4 T. EMF between its ends:
JEE 2022Q2. The rod in the previous question is connected through rails to a 4 Ω external resistor. Current is:
JEE 2021Q3. Same setup — magnetic braking force on the rod is:
JEE 2020Q4. A rod slides on frictionless rails (B = 0.5 T, L = 0.4 m, R = 2 Ω) at constant 3 m/s. External force needed to keep v constant:
JEE 2019Q5. Energy dissipated per second in the previous question is supplied by:
JEE 2018Motional EMF previous-year questions from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 12 physics practice for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG candidates.