[{"id":111177,"question":"The SI unit of magnetic induction is tesla which is equal to","choices":[{"text":"Newton/ampere-meter or N/A-m","value":"A"},{"text":"Newton/ampere<sup>2</sup>-meter or N/A<sup>2</sup>-m","value":"B"},{"text":"Newton/ampere<sup>2</sup>-meter<sup>2</sup> or N/A<sup>2</sup>-m<sup>2</sup>","value":"C"},{"text":"Newton/ampere<sup>2</sup>-meter<sup>2</sup>or N/A<sup>2</sup>-m<sup>2</sup>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":111176,"question":"The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the","choices":[{"text":"magnetic flux","value":"A"},{"text":"magnetic induction","value":"B"},{"text":"magnetic field","value":"C"},{"text":"self inductance","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111175,"question":"Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as","choices":[{"text":"IT = 10<sup>-4 </sup>G","value":"A"},{"text":"IT = 10<sup>5</sup>G","value":"B"},{"text":"IT = 10<sup>3</sup>G","value":"C"},{"text":"IT = 10<sup>4</sup>G","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111174,"question":"The force acting on a charge moving in a magnetic field","choices":[{"text":"is perpendicular to the both magnetic field and direction of motion","value":"A"},{"text":"is proportional to the magnetic of charges","value":"B"},{"text":"vanishes when the motion is directly opposite to the direction of field","value":"C"},{"text":"all of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111173,"question":"'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?","choices":[{"text":"0","value":"A"},{"text":"1","value":"B"},{"text":"0.5","value":"C"},{"text":"-1","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111172,"question":"A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is","choices":[{"text":"minimum","value":"A"},{"text":"maximum","value":"B"},{"text":"zero","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111171,"question":"In a straight current carrying conductor, the direction of magnetic field can be found by","choices":[{"text":"right hand rule","value":"A"},{"text":"left hand rule","value":"B"},{"text":"head to tall rule","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":111170,"question":"The direction of lines of force depends upon the direction of","choices":[{"text":"voltage","value":"A"},{"text":"current","value":"B"},{"text":"charges","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111169,"question":"The most suitable material for permanent magnet is","choices":[{"text":"cobalt","value":"A"},{"text":"iron","value":"B"},{"text":"steel","value":"C"},{"text":"alaminium","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":111168,"question":"The field around a moving charge is called","choices":[{"text":"magnetic field","value":"A"},{"text":"conservative field","value":"B"},{"text":"non-conservative field","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":111167,"question":"The sources of magnetic field are","choices":[{"text":"isolated magnetic poles","value":"A"},{"text":"charges at rest","value":"B"},{"text":"charges in motion","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":3}]