[{"id":60123,"question":"Electric flux is a:","choices":[{"text":"Scalar quantity&nbsp;","value":"A"},{"text":"Vector quantity","value":"B"},{"text":"Variable quantity","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":60120,"question":"The \"toner\" of photocopier is given:","choices":[{"text":"Positive charge","value":"A"},{"text":"Negative charge","value":"B"},{"text":"Remains neutral","value":"C"},{"text":"All of above&nbsp;","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":60117,"question":"The process of copying is:","choices":[{"text":"Axillugraphy&nbsp;","value":"A"},{"text":"Chromatography","value":"B"},{"text":"Xerography","value":"C"},{"text":"Spectrography","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":60115,"question":"The middle region of electric field is:","choices":[{"text":"Maximum field spot","value":"A"},{"text":"Zero field spot","value":"B"},{"text":"Perpendicular field spot","value":"C"},{"text":"All of above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":60112,"question":"The electric field created by positive charge is:","choices":[{"text":"Radially outward","value":"A"},{"text":"Circular","value":"B"},{"text":"Radially inward","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":60108,"question":"Concept of electric field lines was given by:","choices":[{"text":"Michelson","value":"A"},{"text":"Henry","value":"B"},{"text":"Michael faraday","value":"C"},{"text":"Oersted","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":60105,"question":"Force per unit charge is called:","choices":[{"text":"Gravitational force","value":"A"},{"text":"Electric field intensity","value":"B"},{"text":"Coulomb's force","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":60102,"question":"Dielectric constant&nbsp;<sub>εr</sub> for air is:","choices":[{"text":"1","value":"A"},{"text":"1.006","value":"B"},{"text":"1.0002","value":"C"},{"text":"1.0006","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":60099,"question":"Presence of dielectric always.","choices":[{"text":"Increase the electrostatic force","value":"A"},{"text":"Reduces the electrostatic force","value":"B"},{"text":"Do not effect electrostatic force","value":"C"},{"text":"Doubles the electrostatic force","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":2292,"question":"The number of lines per unit area passing perpendicular through an area is called","choices":[{"text":"Flux","value":"A"},{"text":"Electric intensity","value":"B"},{"text":"Both (a) , (b)","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":2291,"question":"Two metallic sphere of radius 2 cm and 4 cm get equal quantity of charge. Which has greater surface charge density ?","choices":[{"text":"2<sup>nd</sup> sphere","value":"A"},{"text":"Both have same","value":"B"},{"text":"First sphere","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":2290,"question":"A force of 0.01 N is exerted on a charge 1.2 x 10<sup>-5</sup> C at a certain point. The electric field at that point is","choices":[{"text":"1.2 x 10<sup>4</sup> N/C","value":"A"},{"text":"1.2 x 10<sup>4</sup> C/N","value":"B"},{"text":"8.3 x 10<sup>2</sup> N/C","value":"C"},{"text":"8.3 x 10<sup>-2</sup> N/C","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":2288,"question":"An electric field cannot deflect","choices":[{"text":"X-rays","value":"A"},{"text":"a-particles","value":"B"},{"text":"ß-particles","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":2285,"question":"If a charge body moved against the electric field it will again","choices":[{"text":"Potential energy","value":"A"},{"text":"K.E","value":"B"},{"text":"Mechanical Energy","value":"C"},{"text":"Electric potential energy","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":2227,"question":"Which one of the following is correct","choices":[{"text":"<br>","value":"A"},{"text":"","img":"2227_9-b.jpg","value":"B"},{"text":"","img":"2227_9-c.jpg","value":"C"},{"text":"All of above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":2224,"question":"The relative permitivity of air is","choices":[{"text":"79.5","value":"A"},{"text":"1.006","value":"B"},{"text":"1.06","value":"C"},{"text":"1.0006","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":2223,"question":"The electric intensity due to two oppositely charged plates is","choices":[{"text":"","img":"2223_6-a.jpg","value":"A"},{"text":"","img":"2223_6-b.jpg","value":"B"},{"text":"","img":"2223_6-c.jpg","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":2209,"question":"The electric intensity at infinite distance from the point charge is","choices":[{"text":"Infinite","value":"A"},{"text":"Zero","value":"B"},{"text":"Positive","value":"C"},{"text":"Negative","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":2208,"question":"Electric flux is a","choices":[{"text":"Vector quantity","value":"A"},{"text":"Scalar quantity","value":"B"},{"text":"Both (a) and (b)","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":2206,"question":"The photo copying process is called","choices":[{"text":"Xerography","value":"A"},{"text":"Inkjet Printer","value":"B"},{"text":"Both (a) and (b)","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":2205,"question":"The number of electrons in one coulomb charge is equal to","choices":[{"text":"6.2 x 10<sup>18</sup> electrons","value":"A"},{"text":"Zero electrons","value":"B"},{"text":"1.6 x 10<sup>-22</sup> electrons","value":"C"},{"text":"6.2 x 10<sup>21</sup> electrons","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":2202,"question":"Metals are good conductors of electricity because they have","choices":[{"text":"Large number of bounded electrons","value":"A"},{"text":"Small number of electrons","value":"B"},{"text":"Large number of free electrons","value":"C"},{"text":"Small number of free electrons","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":2200,"question":"When the medium is insulator the elecrostatic force between the charges is","choices":[{"text":"Decreased","value":"A"},{"text":"Zero","value":"B"},{"text":"Increased","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":1}]