0% Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Physics Class- 12 This Quiz Contains a Set of 10 Questions. Passing cut-off is 60%. To Start the Quiz... Click on the Start Button. All the Best. 1 / 10 An electric dipole is placed in an external uniform electric field in stable equilibrium position. The potential energy of the dipole is: -PE PE -2PE 0 2 / 10 In the metallic conductor shown in the figure is continuously charged. From which of the following points A, B, C, and D does the charge leak first? A B C D 3 / 10 Plates of a capacitor are charged with a battery of ‘V’ volts. After charging, the battery is disconnected and a dielectric slab with dielectric constant ‘K’ is inserted between its plates, the potential across the plates of a capacitor will become: 0 V/2 V/K KV 4 / 10 In a coil of resistance 100 ohms, a current is induced by changing the magnetic flux through it. The variation of current with time is as shown in the figure given below. The magnitude of change in flux through the coil is: 200 Wb 275 Wb 225 Wb 250 Wb 5 / 10 If the voltage applied to a capacitor is increased from 1V to 2V, choose the correct option: Charge remains the same Capacitance remains the same Both charge and capacitance remain the same Both charge and capacitance will be doubled 6 / 10 In a hydrogen atom, the electron moves in an orbit of radius 0.5 Å making 10 revolutions per second, the magnetic moment associated with the orbital motion of the electron will be: 2.512 x 10-38 Am2 1.256 x 10-38 Am2 0.628 x 10-38 Am2 0 7 / 10 Ni shows ferromagnetic properties at room temperature. If heated to a very high temperature, you would expect it to show: Ferromagnetism Diamagnetism Paramagnetism None of the above. 8 / 10 The relaxation time in conductors: increases with increase in temperature decreases with increase in temperature is independent of the temperature First increases and then decreases with increase in temperature 9 / 10 An electric dipole of moment p is placed parallel to the uniform electric field. The amount of work done in rotating the dipole by 900 is- 2pE pE pE/2 0 10 / 10 The current sensitivity of a galvanometer increases by 20%. If its resistance also increases by 25%, the voltage sensitivity will: decrease by 1% increased by 5% increased by 10% decrease by 4% Your score is 0% Restart quiz
