var questions = new Array();
var choices = new Array();
var answers = new Array();
var response = new Array();

questions[0] = "1. When a charge of 3C is placed in a uniform electric field, it experiences a force of 3000N. With this field, the potential difference between two points separated by a distance 1 cm is";
choices[0] = new Array();
choices[0][0] = "1000 V";
choices[0][1] = "100 V";
choices[0][2] = "300 V";
choices[0][3] = "10 V";
answers[0] = choices[0][3];


questions[1] = "2. Two charged -10C and +10C are placed 10cm apart. Potential at the centre of the line joining the two charges is";
choices[1] = new Array();
choices[1][0] = "2V";
choices[1][1] = "zero";
choices[1][2] = "-2V";
choices[1][3] = "none of these";
answers[1] = choices[1][1];

questions[2] = "3. A charge of 5C is given a displacement of 0.5m. The work done in the process of 10J. The potential difference between the two points will be";
choices[2] = new Array();
choices[2][0] = "30 V";
choices[2][1] = "5 V";
choices[2][2] = "0.25 V";
choices[2][3] = "2 V";
answers[2] = choices[2][3];

questions[3] = "4. The SI unit of line integral of electric field is";
choices[3] = new Array();
choices[3][0] = "N / C";
choices[3][1] = "J / C";
choices[3][2] = "V / m";
choices[3][3] = "Nm^2C^(-1)";
answers[3] = choices[3][1];


questions[4] = "5. A work of 100 J is performed in carrying a charge of -5C from infinity to a particular point in an electrostatic field. The potential of this point is";
choices[4] = new Array();
choices[4][0] = "500 V";
choices[4][1] = "5 V";
choices[4][2] = "-20 V";
choices[4][3] = "-50 V";
answers[4] = choices[4][2];

questions[5] = "6. A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10V. The potential at a distance of 2 cm from the centre of the sphere is";
choices[5] = new Array();
choices[5][0] = "zero";
choices[5][1] = "10 V";
choices[5][2] = "4 V";
choices[5][3] = "10/3 V";
answers[5] = choices[5][1];
 
 questions[6] = "7. Unit of electric flux is";
choices[6] = new Array();
choices[6][0] = "N C^(-1) m^2";
choices[6][1] = "J C^(-1)";
choices[6][2] = "V";
choices[6][3] = "V / m";
answers[6] = choices[6][0];

questions[7] = "8. The SI unit of surface integral of electric field is";
choices[7] = new Array();
choices[7][0] = "V";
choices[7][1] = "V-m";
choices[7][2] = "N C^(-1) m";
choices[7][3] = "C m^(-3)";
answers[7] = choices[7][1];

questions[8] = "9. The negative electric flux indicates that the net flux through the surface is";
choices[8] = new Array();
choices[8][0] = "inward";
choices[8][1] = "outward";
choices[8][2] = "outward or inward";
choices[8][3] = "none of above";
answers[8] = choices[8][0];

questions[9] = "10. A surface encloses an electric dipole. The electric flux through the surface is";
choices[9] = new Array();
choices[9][0] = "positive";
choices[9][1] = "negative";
choices[9][2] = "zero";
choices[9][3] = "infinite";
answers[9] = choices[9][2];

questions[10] = "11. The radius of a soap bubble whose potential is 16V is doubled. The new potential of the bubble is";
choices[10] = new Array();
choices[10][0] = "2V";
choices[10][1] = "4V";
choices[10][2] = "8V";
choices[10][3] = "16V";
answers[10] = choices[10][2];

questions[11] = "12. If the distance between the plates of a parallel plate capacitor is halved and electric constant is doubled, then its capacity increases by";
choices[11] = new Array();
choices[11][0] = "2 times";
choices[11][1] = "8 times";
choices[11][2] = "16 times";
choices[11][3] = "4 times";
answers[11] = choices[11][3];
 
questions[12] = "13. When a dielectric material is introduced between the plates of a charged air capacitor, then electric field between the plates";
choices[12] = new Array();
choices[12][0] = "increases";
choices[12][1] = "decreases";
choices[12][2] = "remains constant";
choices[12][3] = "becomes zero";
answers[12] = choices[12][1];

questions[13] = "14. The capacity of the capacitor does not depend upon";
choices[13] = new Array();
choices[13][0] = "charge";
choices[13][1] = "voltage";
choices[13][2] = "nature of material";
choices[13][3] = "all of these";
answers[13] = choices[13][2];

questions[14] = "15. While a capacitor remains connected to a battery and a dielectric slab is slipped between the plates, then,";
choices[14] = new Array();
choices[14][0] = "energy stored in the capacitor decreases";
choices[14][1] = "electric field between the plates increases";
choices[14][2] = "charge from the battery flows to the capacitor";
choices[14][3] = "potential difference between the plates is changed";
answers[14] = choices[14][2];

questions[15] = "16. Equal charges are given to two conducting spheres of different radii. The potential will";
choices[15] = new Array();
choices[15][0] = "be more on the smaller sphere";
choices[15][1] = "be more on the bigger sphere";
choices[15][2] = "be equal on both the spheres";
choices[15][3] = "depends on the nature of the material of the sphere";
answers[15] = choices[15][0];


questions[16] = "17. A capacitor is charged to store an energy of U. The charging battery is disconnected. An identical capacitor is now connected in parallel with this capacitor. The energy stored in each of the capacitors is";
choices[16] = new Array();
choices[16][0] = "3U / 2";
choices[16][1] = "U";
choices[16][2] = "U / 4";
choices[16][3] = "U / 2";
answers[16] = choices[16][2];

questions[17] = "18. When a wire is stretched and its radius becomes r/2, then its resistance will be";
choices[17] = new Array();
choices[17][0] = "16 R";
choices[17][1] = "4 R";
choices[17][2] = "2 R";
choices[17][3] = "R / 2";
answers[17] = choices[17][0];

questions[18] = "19. A 100 W, 220 V bulb is connected across 110V supply. The actual consumed by the bulb will be";
choices[18] = new Array();
choices[18][0] = "25 W";
choices[18][1] = "50 W";
choices[18][2] = "100 W";
choices[18][3] = "200 W";
answers[18] = choices[18][0];


questions[19] = "20. A flow of 10^7 electrons per second in a conducting wire constitutes a current of";
choices[19] = new Array();
choices[19][0] = "1.6 x 10^(-26) A";
choices[19][1] = "1.6 x 10^12 A";
choices[19][2] = "1.6 x 10^(-12) A";
choices[19][3] = "1.6 x 10^26 A";
answers[19] = choices[19][2];

questions[20] = "21. Two cells of same e.m.f E but of different internal resistances r1 and r2 are connected in series with an external resistance R. The potential drop across the first cell is found to be zero. The external resistance R is";
choices[20] = new Array();
choices[20][0] = "r1 + r2";
choices[20][1] = "r1 - r2";
choices[20][2] = "r2 - r1";
choices[20][3] = "r1 . r2";
answers[20] = choices[20][1];
 
 questions[21] = "22. A wire of resistance R is cut into n equal parts. There parts are then connected in parallel. The equivalent resistance of the combination will be";
choices[21] = new Array();
choices[21][0] = "nR";
choices[21][1] = "R / n";
choices[21][2] = "n / R";
choices[21][3] = "R / n^2";
answers[21] = choices[21][3];

questions[22] = "23. If a wire is melted and recasted to half of its length, then the new resistance is";
choices[22] = new Array();
choices[22][0] = "R / 4";
choices[22][1] = "R / 2";
choices[22][2] = "R";
choices[22][3] = "2R";
answers[22] = choices[22][0];

questions[23] = "24. Iron and silicon wires are heated from 30 degs to 50 degs. The correct statement is that";
choices[23] = new Array();
choices[23][0] = "resistance of both the wires increases";
choices[23][1] = "resistance of both the wires decreases";
choices[23][2] = "resistance of iron wire increases and that of silicon wire decreases";
choices[23][3] = "resistance of iron wire decreases and that of silicon wire increases";
answers[23] = choices[23][2];


questions[24] = "25. Two electric bulbs have tungsten filament of same length. If one of them gives 60 W and the other 100 W, then,";
choices[24] = new Array();
choices[24][0] = "60 W bulb has thicker filament";
choices[24][1] = "both filaments are of same thickness";
choices[24][2] = "100 W bulb has thicker filament";
choices[24][3] = "none of these";
answers[24] = choices[24][2];

questions[25] = "26. There are two electric bulbs of 40W and 100W. Which one will be brighter when they are first connected in series and then in parallel ?";
choices[25] = new Array();
choices[25][0] = "100W both in series and parallel";
choices[25][1] = "40W both in series and parallel";
choices[25][2] = "100W in series with 40W in parallel";
choices[25][3] = "40W in series with 100W in parallel";
answers[25] = choices[25][3];

questions[26] = "27. A uniform wire of resistance R is uniformly compressed along its length until its radius becomes n times the original radius. Now resistance of the wire becomes";
choices[26] = new Array();
choices[26][0] = "R / (n^4)";
choices[26][1] = "R / (n^2)";
choices[26][2] = "R / n";
choices[26][3] = "nR";
answers[26] = choices[26][0];


questions[27] = "28. If there is an increase in length by 0.1% due to stretching, the percentage increase in its resistance will be";
choices[27] = new Array();
choices[27][0] = "0.1%";
choices[27][1] = "2%";
choices[27][2] = "1%";
choices[27][3] = "0.2%";
answers[27] = choices[27][3];

questions[28] = "29. Kirchhoff's current law at ajunction deals with conservation of";
choices[28] = new Array();
choices[28][0] = "energy";
choices[28][1] = "charge";
choices[28][2] = "momentum";
choices[28][3] = "all of these";
answers[28] = choices[28][1];
 
 questions[29] = "30. In a potentiometer experiment, two primary cells are connected in series to support each other and then connected to oppose each other. The balance points are obtained at 4m and 1m respectively. The ratio of the emfs of the two cells is";
choices[29] = new Array();
choices[29][0] = "5 : 3";
choices[29][1] = "4 : 1";
choices[29][2] = "2 : 1";
choices[29][3] = "5 : 4";
answers[29] = choices[29][0];