[{"id":15588,"question":"If in a moving coil galvanometer a current 1 produces a deflection θ then","choices":[{"text":"i ∞ tan&nbsp;θ","value":"A"},{"text":"i&nbsp;∞ θ<sup>2</sup>","value":"B"},{"text":"i ∞ θ","value":"C"},{"text":"i ∞ √θ","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":15587,"question":"Which of the following particle would experience the largest magnetic force when projected with the same velocity perpendicular to a magnetic field?","choices":[{"text":"Proton","value":"A"},{"text":"Electron","value":"B"},{"text":"He<sup>+</sup>","value":"C"},{"text":"Li<sup>+</sup>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":15586,"question":"Shunt required in an ammeter of resistance R to decrease its deflection from 30 ampere to 10 ampere is","choices":[{"text":"R/4","value":"A"},{"text":"R/3","value":"B"},{"text":"R/2","value":"C"},{"text":"R","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":15585,"question":"The magnetic moment of a circular coil carrying current is","choices":[{"text":"Directly proportional to the length of the wire in the coil","value":"A"},{"text":"Inversely proportional to the length of the wire in the coil","value":"B"},{"text":"Directly proportional to the square of the length of the wire in the coil","value":"C"},{"text":"Inversely proportional to the square of the length of the wire in the coil","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":15584,"question":"Choose the correct statement","choices":[{"text":"Both an ammeter and voltmeter should have small resistance","value":"A"},{"text":"Both an ammeter and a voltmeter should have large resistance","value":"B"},{"text":"An ammeter should have large resistance and a voltmeter should have small resistance","value":"C"},{"text":"An ammeter should have small resistance and a voltmeter should have large resistance","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":15583,"question":"A moving charge will gain energy due to the application of","choices":[{"text":"Electric field","value":"A"},{"text":"Magnetic","value":"B"},{"text":"Both of these","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15582,"question":"If a diamagnetic substance is brought near north or south pole of a bar magnet it is","choices":[{"text":"Attracted by the poles","value":"A"},{"text":"Repelled by the poles","value":"B"},{"text":"Repelled by north pole and attracted by the south pole","value":"C"},{"text":"Attracted by the north pole and repelled by the south pole","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":15581,"question":"A voltmeter has resistance of 2000 ohms and it can measure up to 2V. If we want to increase its range to 10V then required resistance in series will be","choices":[{"text":"2000&nbsp;Ω","value":"A"},{"text":"4000&nbsp;Ω","value":"B"},{"text":"6000&nbsp;Ω","value":"C"},{"text":"8000&nbsp;Ω","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":15580,"question":"In a voltmeter the conduction takes place due to","choices":[{"text":"Electrons only","value":"A"},{"text":"Holes only","value":"B"},{"text":"Electrons and holes","value":"C"},{"text":"Electrons and ions","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15579,"question":"A conducting wire is drawn to double its length Final resistivity of the material will be","choices":[{"text":"Double of the original one","value":"A"},{"text":"Half of the original one","value":"B"},{"text":"One-fourth of the original one","value":"C"},{"text":"Same as original one","value":"D"},{"value":"E"}],"correctAnswer":4}]