[{"id":227166,"question":"The electric field created by positive charge is","choices":[{"text":"Radially inward","value":"A"},{"text":"Zero","value":"B"},{"text":"Circular","value":"C"},{"text":"Radially outward","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227165,"question":"One joule is equal to.","choices":[{"text":"1.6 x 10<sup>19</sup> eV","value":"A"},{"text":"1.6 x 10<sup>-19</sup> eV","value":"B"},{"text":"6.25 x 10<sup>-18</sup> eV","value":"C"},{"text":"6.25 x 10 <sup>18</sup> eV","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227164,"question":"Electric field intensity at a point is defined by the relation.","choices":[{"text":"E= q/F","value":"A"},{"text":"E = F/q","value":"B"},{"text":"E = qF","value":"C"},{"text":"E = F/q2","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227163,"question":"Concept of the electric field lines is introduced by","choices":[{"text":"Coulomb","value":"A"},{"text":"Faraday","value":"B"},{"text":"Einstein","value":"C"},{"text":"Joseph henry","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227162,"question":"The fact that electric field exist in space around an electrical charge is","choices":[{"text":"Electrical property","value":"A"},{"text":"Gravitational property","value":"B"},{"text":"Intrinsic property of nature","value":"C"},{"text":"Extrinsic property of nature","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":227161,"question":"NC-1 is the SI unit is","choices":[{"text":"Force","value":"A"},{"text":"Charge","value":"B"},{"text":"Current","value":"C"},{"text":"Electric intensity","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227160,"question":"S.I unit of strength of electric field is","choices":[{"text":"J/C","value":"A"},{"text":"C/V","value":"B"},{"text":"V/C","value":"C"},{"text":"N/C","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227159,"question":"If the distance between two charges is halved and charges are also doubled, then force between them will be.","choices":[{"text":"Two time","value":"A"},{"text":"Four time","value":"B"},{"text":"Eight time","value":"C"},{"text":"Sixteen time","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227158,"question":"If F1 and F2 are teh magnetic forces acting on a particle and electron respectively when moving perpendicular to the magnetic field then.","choices":[{"text":"F1=F2","value":"A"},{"text":"F1&gt;F2","value":"B"},{"text":"F1&lt;F2","value":"C"},{"text":"F1 = 4F2","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227157,"question":"Two oppositely charged balls A and B attract the third ball C, when placed near them turn by turn The third ball C must be.","choices":[{"text":"Positively charged","value":"A"},{"text":"Negatively charged","value":"B"},{"text":"Electrically neutral","value":"C"},{"text":"Positively and negatively charged","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227156,"question":"the force between two charge is 28 N. If paraffin wax of relative permittivity 2.8 is introduced between the charges as medium, then the force reduces to.","choices":[{"text":"25 N","value":"A"},{"text":"20 N","value":"B"},{"text":"10 N","value":"C"},{"text":"15 N","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227155,"question":"If both the magnitude of charges and distance between them is doubled, then coulomb's force will be.","choices":[{"text":"Doubled","value":"A"},{"text":"Hlaf","value":"B"},{"text":"Remain same","value":"C"},{"text":"One fourth","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227154,"question":"If the distance between the two charged bodies is halved, the force between them becomes.","choices":[{"text":"Double","value":"A"},{"text":"Half","value":"B"},{"text":"Four times","value":"C"},{"text":"One times","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227153,"question":"The electrostatic force between two charges is 42 N, If we place a dielectric of E<sub>y</sub>=2.1 between the charges then the force become equal to.","choices":[{"text":"42 N","value":"A"},{"text":"88.2 N","value":"B"},{"text":"20 N","value":"C"},{"text":"2 N","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227152,"question":"The SI unit of relative permittivity is.","choices":[{"text":"Fm-1","value":"A"},{"text":"C2N-1m-2","value":"B"},{"text":"Nm2C-2","value":"C"},{"text":"No unit","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227151,"question":"The electrons in one coulomb change is equal to.","choices":[{"text":"1.6 x 10<sup>-19</sup>","value":"A"},{"text":"2.25 x 10<sup>-19</sup>","value":"B"},{"text":"6.25 x 10<sup>-18</sup>","value":"C"},{"text":"6.25 x 10<sup>-19</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227150,"question":"For which material medium, force between two charged particles is maximum.","choices":[{"text":"Ammonia","value":"A"},{"text":"Germanium","value":"B"},{"text":"Mica","value":"C"},{"text":"Teflon","value":"D"},{"value":"E"}],"correctAnswer":4}]