[{"id":146108,"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":146107,"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":146106,"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":146105,"question":"The incorrect statement regarding the lines of force of the magnetic field B is","choices":[{"text":"Magnetic intensity is a measure of lines of force passing through unit area held normal to it","value":"A"},{"text":"Magnetic lines of force form a close curve","value":"B"},{"text":"Inside a magnet, its magnetic lines of force move from north pole of a magnet towards its south pole","value":"C"},{"text":"Due to a magnet magnetic lines of force never cut each other","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":146104,"question":"The unit of electric current 'ampere' is the amount of current flowing through each of two parallel wires 1 m apart and of infinite length will give rise to a force between them equal to","choices":[{"text":"1 N/m","value":"A"},{"text":"2 x 10<sup>-7</sup>N/m","value":"B"},{"text":"1 x 10<sup>-2</sup>N/m","value":"C"},{"text":"4 x 10<sup>2</sup>N/m","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":146103,"question":"A moving charge will gain energy due to the application of","choices":[{"text":"Electric field","value":"A"},{"text":"Magnetic field","value":"B"},{"text":"Both of these","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":146102,"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":146101,"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 ohm","value":"A"},{"text":"4000 ohm","value":"B"},{"text":"6000 ohm","value":"C"},{"text":"8000 ohm","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":146100,"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":146099,"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},{"id":146098,"question":"A piece of fuse wire melts when a current of 15 ampere flows through it.<div>With this current, if it dissipates 22.5 W, the resistance of fuse wire will be</div>","choices":[{"text":"Zero","value":"A"},{"text":"10 ohm","value":"B"},{"text":"1 ohm","value":"C"},{"text":"0.10 ohm","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":146097,"question":"The conductivity of a superconductor is","choices":[{"text":"Infinite","value":"A"},{"text":"Very large","value":"B"},{"text":"Very small","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":146096,"question":"If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be","choices":[{"text":"0.1 watt","value":"A"},{"text":"1 watt","value":"B"},{"text":"10 watt","value":"C"},{"text":"100 watt","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":146095,"question":"A 50-volt battery is connected across 10-ohm resistor. The current is 4.5 A. The internal resistance of the battery is","choices":[{"text":"Zero","value":"A"},{"text":"0.5 ohm","value":"B"},{"text":"1.1 ohm","value":"C"},{"text":"5.0 ohm","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":146094,"question":"A (100 W, 200 V) bulb is connected to a 160 V power supply. The power consumption would be","choices":[{"text":"64 W","value":"A"},{"text":"80 W","value":"B"},{"text":"100 W","value":"C"},{"text":"125 W","value":"D"},{"value":"E"}],"correctAnswer":1}]