[{"id":227240,"question":"The SI unit of resistivity is.","choices":[{"text":"Ohm m-2","value":"A"},{"text":"Ohm m-1","value":"B"},{"text":"Ohm m","value":"C"},{"text":"Ohm","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227239,"question":"mho -m-1 is the unit of.","choices":[{"text":"Resistance","value":"A"},{"text":"Resistivity","value":"B"},{"text":"Conductance","value":"C"},{"text":"Conductivity","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227238,"question":"The reciprocal of resistance is called.","choices":[{"text":"Capacitance","value":"A"},{"text":"Resistance","value":"B"},{"text":"Conductance","value":"C"},{"text":"Inductance","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227237,"question":"The unit of temperature co efficient of resistivity is.","choices":[{"text":"Ohm -m","value":"A"},{"text":"K-1","value":"B"},{"text":"K","value":"C"},{"text":"Ohm","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227236,"question":"Specific resistance of a material depends upon.","choices":[{"text":"Length","value":"A"},{"text":"Area","value":"B"},{"text":"Temperature","value":"C"},{"text":"Both A and B","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227235,"question":"When a wire of length 'l' and resistance R is cut into two equal parts then resistivity of each part.","choices":[{"text":"is doubled","value":"A"},{"text":"Remains the same","value":"B"},{"text":"Is halved","value":"C"},{"text":"Is one fourth","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227234,"question":"The current through a resistance of 100 Ohm when connecting across a source of 220 V is.","choices":[{"text":"22000 A","value":"A"},{"text":"22 A","value":"B"},{"text":"2.2 A","value":"C"},{"text":"0.45 A","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227233,"question":"The current flowing through each resistor of equal resistance in parallel combination is.","choices":[{"text":"Same","value":"A"},{"text":"Different","value":"B"},{"text":"Zero","value":"C"},{"text":"Infinite","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227232,"question":"One ohm is equal to","choices":[{"text":"VC-1","value":"A"},{"text":"CV-1","value":"B"},{"text":"AC-1","value":"C"},{"text":"VA<sup>-1</sup>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227231,"question":"Two resistance of 2 Ohm each are connected in parallel combination equivalent resistance will be.","choices":[{"text":"4 Ohm","value":"A"},{"text":"2 Ohm","value":"B"},{"text":"1 Ohm","value":"C"},{"text":"8 Ohm","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227230,"question":"For ohmic device the graph between V and I is.","choices":[{"text":"A straight line","value":"A"},{"text":"Curve","value":"B"},{"text":"Hyperbola","value":"C"},{"text":"Parabola","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":227229,"question":"Magnetic effect of current is used in.","choices":[{"text":"Toaster","value":"A"},{"text":"Electric iron","value":"B"},{"text":"Electric motor","value":"C"},{"text":"D.C. Battery","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":227228,"question":"The head produced by the passage of current through a resistor is.","choices":[{"text":"H= I<sup>2</sup>Rt","value":"A"},{"text":"H = IR<sup>2</sup>t","value":"B"},{"text":"H = 1/Rt","value":"C"},{"text":"H = I<sup>2</sup>/Rt","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":227227,"question":"Heat generated by a 40 W bulb in one hour is.","choices":[{"text":"140 J","value":"A"},{"text":"1440 J","value":"B"},{"text":"14400 J","value":"C"},{"text":"144000 J","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":227226,"question":"5 A of current flows through a conductor in 2 minutes, charge in the wire is.","choices":[{"text":"500 C","value":"A"},{"text":"600 C","value":"B"},{"text":"400 C","value":"C"},{"text":"10 C","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":227225,"question":"By increasing the temperature of conductor, the flow rate of charges.","choices":[{"text":"Increase","value":"A"},{"text":"Remains constant","value":"B"},{"text":"Decreases","value":"C"},{"text":"Changes exponentially","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":227224,"question":"the current which flows from a point at higher. potential to point at lower potential is called.","choices":[{"text":"Electric current","value":"A"},{"text":"Conventional current","value":"B"},{"text":"Either of these","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":2}]