The internal resistance of the cell is 0.5 Ω, calculated using Ohm’s law by equating EMF expressions for both resistor cases. Correct answer: (d). Class 12th Science Physics NCERT MCQ Questions NCERT Books MCQ Questions Session 2024-2025.
Discussion Forum Latest Questions
The Wheatstone bridge is balanced since all four arms have equal resistance R. The galvanometer arm also has resistance R. The equivalent resistance of the entire network simplifies to R, using series-parallel reduction. Hence, the correct answer is (a) R.
Since the conductor has a nonzero potential and there are no external charges, there must be charges present to maintain this potential. In electrostatic equilibrium, any excess charge on a conductor resides only on the surface, as the electric field ...
The correct answers are (b) and (c). In a region of constant potential, the electric field is zero because the electric field is the negative gradient of potential. Since potential is constant, its gradient is zero. Also, there can be ...
The correct answer is (c) decreases because the charge moves along the electric field. A positively charged particle in a uniform electric field experiences a force in the direction of the field. As it accelerates, its kinetic energy increases, causing ...
The correct answer is (a) spheres. At a great distance from a collection of charges with a nonzero net charge, the system behaves like a point charge. The equipotential surfaces around a point charge are spherical, since the electric potential ...
The correct answer is (d) on the x-y plane for a given z. In a uniform electric field along the z-direction, the electric potential depends only on z and remains constant for any x and y at a fixed z. ...
The equivalent capacitance will be C divided by n. Hence, the correct answer is (b) C by n. Class 12th Science Physics NCERT MCQ Questions NCERT Books MCQ Questions Session 2024-2025.
Electric field lines always point in the direction of decreasing potential and are perpendicular to the equipotential surface. Hence, the correct answer is (b) Perpendicular to equipotential surface. Class 12th Science Physics NCERT MCQ Questions NCERT Books MCQ Questions Session ...
In a uniform electric field, equipotential surfaces are planes that are perpendicular to the direction of the electric field. Since the field is uniform, these surfaces remain equidistant from each other. Thus, the correct answer is (d) Equidistant planes normal ...