安徽省铜陵一中2012-2013学年高二联考(一)物理试题(国外英文资料).doc

安徽省铜陵一中2012-2013学年高二联考(一)物理试题 The first time in the 2012-13 school year in tongling, anhui province physical Time: 90 minutes: 100 points One, the choice question (each question has only one correct option, the correct choice is filled in the answer sheet. The following statement is true () A. by E = F/q, the electric field intensity of A point in the electric field is proportional to F B. It is proportional to the electric potential of some point in the electric field C. By the way, the greater the distance between the two points of a and b, the greater the potential difference between the two points D. Formula, the capacitance C of the capacitor is not related to the voltage difference between the plates of the capacitor The first study of the electromagnetic force was the French scientist, ampere. The device shown here can explore factors affecting the size of an ampere, and in the experiment, if you want to increase the amplitude of the conductor rod AB, the feasible operation is (). A: change the N pole of the magnet to the S pole Decrease the current strength of the conductor rod C. switch the wires of the connected circuit from two to two D. replace magnets with smaller magnets 3, the current four different motion pictures show that the acceleration of the object motion is a, the velocity is v, the displacement is x, and the object at t = 0 is zero. The image of the object doing a one-way motion is () , as shown in figure 4 for the schematic diagram of MHD generator, plasma beam (contains positive and negative ions) at A certain speed vertical injection produced by A pair of poles C, D and strong magnetic field, A and B is A pair of metal plate is placed parallel to the magnetic field. The current in the current meter is flowing from the + to the - pole, which is known (). A. d. pole to pole S The positive ion is deflecting to B C. negative ion is deflected to D D. ions in the magnetic field are deflected by lorentz force 5, as shown, smooth semi-spherical c