[{"id":253189,"question":"A charge is 90C passes through a wire in 1 hour and 15 minutes. Wat is the current in\r\nthe wire?","choices":[{"text":"10mA","value":"A"},{"text":"20mA","value":"B"},{"text":"15mA","value":"C"},{"text":"25mA","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253185,"question":"Electric current is defined as:","choices":[{"text":"Flow of charges through conductor","value":"A"},{"text":"Rate of flow of charges through conductor","value":"B"},{"text":"Flow of electrons","value":"C"},{"text":"Flow of protons","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253182,"question":"When the length and area of cross-section both are doubled, then its resistance:","choices":[{"text":"Will become half","value":"A"},{"text":"Will remain the same","value":"B"},{"text":"Will be doubled","value":"C"},{"text":"Will become four times","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253177,"question":"The rate at which the battery is supplying the electrical energy is the:","choices":[{"text":"Power output","value":"A"},{"text":"Electrical power","value":"B"},{"text":"Power input","value":"C"},{"text":"Both A and C","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253176,"question":"A piece of Aluminium (Al) and a piece of Germanium (Ge) are cooled T1 K to T2 K. The\r\nresistance of:","choices":[{"text":"Each of them increases","value":"A"},{"text":"Each of them decreases","value":"B"},{"text":"Al increases and Ge decreases","value":"C"},{"text":"Al decreases and that of Ge increases","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":253174,"question":"The specific resistance of a wire varies with its:\r\n","choices":[{"text":"Length","value":"A"},{"text":"Cross-section","value":"B"},{"text":"Mass","value":"C"},{"text":"Material","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":253173,"question":"The ‘emf ’ is always even when no current is drawn through the battery of the\r\ncell:","choices":[{"text":"Zero","value":"A"},{"text":"Present","value":"B"},{"text":"Absent","value":"C"},{"text":"Maximum","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253171,"question":"A total charge of 100C flows through 12W bulb in a time of 50 second. Which is the\r\npotential difference across the bulb during this time?","choices":[{"text":"0.12V","value":"A"},{"text":"6.0V","value":"B"},{"text":"2.0V","value":"C"},{"text":"24V","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253170,"question":"There are two electric bulbs of 40 W and 100 W. They are first connected in series and\r\nthen in parallel across a source:","choices":[{"text":"40W bulb will be brighter in series and 100W in parallel","value":"A"},{"text":"100W bulb will be brighter in series and 40W in parallel","value":"B"},{"text":"40W bulb will be brighter in both the cares","value":"C"},{"text":"100W bulb will be brighter in both the cares","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":253169,"question":"An electric room radiator, which operates at 50V has resistance of 50 Ω. Power of the\r\nradiator is approximately:","choices":[{"text":"100W","value":"A"},{"text":"50W","value":"B"},{"text":"450W","value":"C"},{"text":"1000W","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253168,"question":"The product of resistance and conductance of a resistors is equal to:","choices":[{"text":"1","value":"A"},{"text":"Conductivity","value":"B"},{"text":"Resistivity","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":253167,"question":"Two wires of same material have lengths L and 2L and cross-sectional area 4A and A\r\nrespectively. the ratio of their specific resistance would be:","choices":[{"text":"1: 1","value":"A"},{"text":" 1: 8","value":"B"},{"text":"8: 1","value":"C"},{"text":"1: 2","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":253140,"question":"A charge of 2C experiences a force 2000N in a uniform electric field. In this fieldthe potential \r\ndifference between two points separated by a distance 1cm is","choices":[{"text":"2V","value":"A"},{"text":"10V","value":"B"},{"text":"5V","value":"C"},{"text":"20V","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253137,"question":"Capacitance of a capacitor does not depend upon","choices":[{"text":"Separation between plates","value":"A"},{"text":"Thickness of the plates","value":"B"},{"text":"Area of the plates","value":"C"},{"text":"Medium between the plates","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253134,"question":"Two point charges repel each other with a force of 4× 𝟏𝟎−𝟓 newton at a distanceof meter. Two \r\ncharges are","choices":[{"text":"Both positive","value":"A"},{"text":"Alike","value":"B"},{"text":"Both Negative","value":"C"},{"text":"Unlike","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253128,"question":"The potential difference between head and tail of an \"electric eel\" can be upto.","choices":[{"text":"6V","value":"A"},{"text":"60V","value":"B"},{"text":"6000V","value":"C"},{"text":"600V","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":253125,"question":"The relative permittivity of air is","choices":[{"text":"1","value":"A"},{"text":"3.7","value":"B"},{"text":"7.8","value":"C"},{"text":"1.0006","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":253124,"question":"The relative permittivity of air is","choices":[{"text":"1","value":"A"},{"text":"3.7","value":"B"},{"text":"7.8","value":"C"},{"text":"1.0006","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":253123,"question":"Area under Q-V graph for a capacitor represents","choices":[{"text":"Charged stored","value":"A"},{"text":"Energy stored","value":"B"},{"text":"Electric field strength","value":"C"},{"text":"Potential difference","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253119,"question":"When a dielectric is inserted between the plates of a capacitor, Which one is true","choices":[{"text":"Energy stored increase","value":"A"},{"text":"Energy stored decrease","value":"B"},{"text":"Capacitance decrease","value":"C"},{"text":"All","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253116,"question":"Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges\r\nare halved and distance between them is doubled, then the new force acting on each charge is:","choices":[{"text":"F/8","value":"A"},{"text":"F/4","value":"B"},{"text":"F/16","value":"C"},{"text":"4F","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253113,"question":"Charge on a capacitor is 50C. if voltage applied across its plates is 10V then its capacitance:","choices":[{"text":"5F","value":"A"},{"text":"0.02F","value":"B"},{"text":"500F","value":"C"},{"text":"0.2F","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":253112,"question":"An electron is moving towards high potential. Its electrical P.E:","choices":[{"text":"Increases","value":"A"},{"text":"Remains constant","value":"B"},{"text":"Decrease","value":"C"},{"text":"May increase may decrease","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253109,"question":"A body gets positive charge. It means that:","choices":[{"text":"It has lost electrons","value":"A"},{"text":"It has gained positions","value":"B"},{"text":"It has gained protons","value":"C"},{"text":"It has gained 𝛼 −particles","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":253106,"question":"A parallel plate air capacitor is charged and then isolated. When a dielectric material is inserted\r\nbetween the plates of the capacitor , then which of the following does not change:","choices":[{"text":"Electric field between the plates","value":"A"},{"text":"Charge on the plates","value":"B"},{"text":"Potential difference across the plate","value":"C"},{"text":"Energy stored in the capacitor","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253103,"question":"A charged conductor has charged on its:","choices":[{"text":"Outer surface","value":"A"},{"text":"Surrounding surface","value":"B"},{"text":"Inner surface","value":"C"},{"text":"Middle point","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":253100,"question":"A soap bubble is give a negative charge, then its radius:","choices":[{"text":"Decrease","value":"A"},{"text":"Remains same","value":"B"},{"text":"Increases","value":"C"},{"text":"Bubble will disappear","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253093,"question":"Two point charges +2 coulombs and +6 coulombs repel each other with a force of 12 N if a charge\r\n-4 coulomb is given to each of these charges the force will be:","choices":[{"text":"4N repulsive","value":"A"},{"text":"8N repulsive","value":"B"},{"text":"4N attractive","value":"C"},{"text":"8N attractive","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253092,"question":"If the magnitude of charge on each of two objects is doubled and the distance between them is also\r\ndoubled then force between them:","choices":[{"text":"Doubled","value":"A"},{"text":"Quadrupled","value":"B"},{"text":"Halved","value":"C"},{"text":"Remains same","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":253091,"question":"Which one of the following statements regarding electrostatics is wrong?","choices":[{"text":"Charge is conserved","value":"A"},{"text":"Charge is quantized","value":"B"},{"text":"There is no field near an isolated charge at rest","value":"C"},{"text":"A moving charge produces both electric and magnetic fields","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253090,"question":"An electric field can deflect:","choices":[{"text":"X-rays","value":"A"},{"text":"Neutrons","value":"B"},{"text":"𝛼 −particles","value":"C"},{"text":"𝛾 −rays","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253089,"question":"If the distance between the plates of a parallel plates capacitor is increased, its potential will:","choices":[{"text":"Remain the same","value":"A"},{"text":"Increase","value":"B"},{"text":"Decrease","value":"C"},{"text":"Decrease exponentially","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253088,"question":"Capacitor stores energy in the form of :","choices":[{"text":"Electric field","value":"A"},{"text":"Both of these","value":"B"},{"text":"Magnetic field","value":"C"},{"text":"Gravitational field","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":253087,"question":"The law, governing the force between electric charges is known as:","choices":[{"text":"Ampere’s law","value":"A"},{"text":"Ohm’s law","value":"B"},{"text":"Coulomb’s law","value":"C"},{"text":"Faraday’s law65y7uhnb","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":253086,"question":"Between the plates of a parallel plate condenser there is 1mm thick paper of dielectric constant 4. Itis\r\ncharged at 100 volt. The electric field in volt/meter between the plates of the capacitor is:","choices":[{"text":"100","value":"A"},{"text":"25000","value":"B"},{"text":"100000","value":"C"},{"text":"400000","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253082,"question":"The coulomb’s law is valid for the charges which are:","choices":[{"text":"Moving and point charges","value":"A"},{"text":"Stationary and point charges","value":"B"},{"text":"Moving and non-point charges","value":"C"},{"text":"Stationary and large size charges","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253074,"question":"The distance between the plates of a charged parallel plate capacitor is 4mm and potential\r\ndifference is 6 volts. If the distance between the plates is increased to 12mm, then :","choices":[{"text":"The potential difference of the capacitor will become 18 volts","value":"A"},{"text":"The P.D become 20 volts","value":"B"},{"text":"The P.D will remain unchanged","value":"C"},{"text":"The charge on condenser will reduce to one third","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":253071,"question":"The electron is a cathode-ray tube are accelerated from cathode to anode by a potential differenceof\r\n2000 V. If this p.d is increased to 8000 V, the electrons will arrive at the anode with:","choices":[{"text":"Twice the kinetic energy and four times the velocity","value":"A"},{"text":"Four times the kinetic energy and twice the velocity","value":"B"},{"text":"Four times the kinetic energy and sixteen times the velocity","value":"C"},{"text":"Sixteen times the kinetic energy and four times the velocity","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253009,"question":"An organ pipe open at both ends and another organ pipe, closed at one end willresonate with each \r\nother, if their lengths are in ration of","choices":[{"text":"1:1","value":"A"},{"text":"1:4","value":"B"},{"text":"2:1","value":"C"},{"text":"1:2","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":253007,"question":"The fundamental frequency of a closed organ pope is 50 Hz. The frequency ofsecond over tone is","choices":[{"text":"100hz","value":"A"},{"text":"150hz","value":"B"},{"text":"60hz","value":"C"},{"text":"250hz","value":"D"},{"value":"E"}],"correctAnswer":4}]