A circular disc rolls down on an inclined plane without slipping. What fraction of its total energy is translational ?
An infinite number of charges, each equal to q, are placed along the x-axis at x=1, x=2, x = 4, x=8 and so on. What is the potential at x = 0 due to this set of charges ?
A liquid flows through two capillary tubes A and B connected in series. The length and radius of B are twice those of A. What is the ratio of the pressure difference across A to that across B ?
A 50 cm long conductor AB moves with a speed 4 m/s in a magnetic field B = 0.01 Wb/m2 as shown. Find the emf generated and power delivered if resistance of the circuit is 0.1 Ω.
An electron is moving with velocity m/s in an electric field of intensity volt/m and a magnetic field of tesla. Find the magnitude of force on the electron.