(d) resistivity Positive and negative charges can combine to produce the third typeD. Engineering Objective Questions MCQ with Answer Free Pdf Download, Objective Questions and (a) increases 2 0 obj (d) Power are additive Ans: b, 56. A rheostat differs from potentiometer in the respect that it A. electric charge in units of volts per s. C. electric charge in units of coulomb per s. D. electrons in units of electrons per s. Explanation: electric charge in units of coulomb per s. 12. Ans: a, 44. (b) chromium and vanadium Ans: b, 70. (c) nichrome (a) decrease (a) decreases Answers Pdf Free Download. Which of these quantities is constant along the conductor: current, current density, electric field, drift speed? (b) infinite Derive an expression for capacitance of parallel plate capacitor with dielectric slab of thickness t(t is less than d) between the plates separated by distance d. How would the following (i) energy (ii) charge, (iii) potential be affected if dielectric slab is introduced with battery disconnected, (b) dielectric slab is introduced after the battery is connected. Below are current electricity physics MCQs with answers. Collected from Other Sites on Internet. A field of force can exist only between The substances which have a large number of free electrons and offer a low resistance are called (a) D.C. supply only other state level and India level engineering exams. (a) lead and zinc A. only wiperB. plz send me all pdf chapterwise questions with answere on my id-choudharyindrajit123@gmail. Jazakallahu khair… The thickness of insulation provided on the conductor depends on CURRENT Electric current is the amount of charge that moves past any point in a conductor each second. (a) charcoal According to Ohm’s law, the relation for the potential is V = IR Voltage (V) is directly proportional to current (I). (c) A galvanometer with low resistance in series is an ammeter (b) rest of the two bulbs will not light (d) is zero in the highest resistive branch (a) Compounds of silver Conductance : mho :: Provide a downloading option for downloading and for problem sum please solve it in detail so that we can understand it clearly. Ans: c, 99. Two point charges 4e and e each, at a separation r in air, exert force of magnitude F. They are immersed in a medium of dielectric constant 16. (d) Mica Pdf Download, UPPCL AE Previous Year Electrical, Civil, Ans: a, 51. To view Explanation, Please buy any of the course from below. Charge and Current The concept of electric charge is the underlying principle for explain-ing all electrical phenomena. (d) inductance follow below links. (b) increases (d) 1.0 ohm Electric current originates from which part of an atom? NCERT Solutions for Class 12 Physics Chapter 3 Current Electricity Exercises and Additional Exercises in PDF form free download or use it online without downloading updated for academic session 2020-2021. (b) A galvanometer with high resistance in parallel is a voltmeter If the conductor having smaller cross-sectional area has a resistance of 40 ohms the resistance of other conductor will be (d) 5 : 2 Ans: c. 97. Awesome collection sir very helpful for me (b) decreases endobj Ans: c, 25. 23. (d) none of the above (a) Elements have individual currents Ans: a, 103. Electron drift speed is estimated to be only a few mm/s for currents in the range of few amperes? For a heater of 1 kW at 200 V, the length of wire required will be Ans: b, 22. What is the most commonly used conductor in electronics? (d) none of the above (d) amperes Also see our. (c) Inductor (d) resistance <> (b) independent of current strength Here you can find MCQs on Current Electricity with Answers for physics subject. (e) 9 times The four bulbs of 40 W each are connected in series swift a battery across them, which of the following statement is true ? Give the name of materials which contain lots of free electrons. Atoms from which electrons have been removed produce a positive electric charge.C. In an electric kettle water boils in 10 m minutes. (c) two atoms Ans: d, 18. If one bulb burns open (a) practically zero Ans: c, 112. (d) copper and silver Ans: b, 71. Please Send me All PDF files for Electrical and electronics engineering. (e) Ratio of output to input Using the principle of Wheatstone bridge, describe the method to determine the specific resistance of a wire in the laboratory. (6) area of cross-section (d) none of the above The relation between potential difference (V) and current (I) is : 32 The relation between the potential difference (V) and current (I) was discovered by : The relation between potential difference (V) and current (I) was discovered by Ohm. Ans: c, 93. Draw a circuit diagram used to compare the emf of two primary cells. (c) resistance must be wire wound type Current velocity through a copper conductor is With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals A nichrome wire used as a heater coil has the resistance of 2 £2/m. Electrical forces are produced by electrical charges. Ans: c, 37. Ans: c, 114. Explanation: When resistance decreases, the current increases. What happens if the galvanometer and cell are interchanged at the balance point of the metre bridge? EMF. (c) 3 Q The largest drop will be across A high tension (HT) supply of, say, 6 kV must have a very large internal resistance. (b) 10 ohms (a) 1 Q (c) remains same ��t%��_��|�i¦��ۿ�|q���S)����>M>LO��az"'ߧ��l�v�`7�5i��rz�'��nrL50�����,x�X]��94V�uQ���*P��� (a) 10-8 mm 3 0 obj You have to replace 1500 Q resistor in radio. (a) Zinc Ans: d, 29. (a) 160 ohms “Generator = Mechanical Energy to Electrical Energy. (c) second electron from the orbit Out of the following which is an insulating material ? If you like this article Three 6 ohm resistors are connected to form a triangle. NCERT Solutions for Class 12 Physics Chapter 3 Current Electricity Exercises and Additional Exercises in PDF form free download or use it online without downloading updated for academic session 2020-2021. It is presidency_yk@yahoo.com. Which of the following quantities remain the same in all parts of a series circuit ? (d) kWh consumed The resistance of the wire varies inversely as: Explanation: The resistance of the wire varies inversely as Area of cross section, Explanation: Voltage is a form of Potential energy. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. (b) two ions Ans: a, 26. 1 angstrom is equal to A resistance having rating 10 ohms, 10 W is likely to be a (a) a column of mercury In an electrical circuit, the current flows from the point where the electrical potential is highest to the point where it is lowest. Ans: b, 110. (c) small resistors The resultant resistance of the first combination to the second will be SIR ITS VERY HELPFUL TO ME FOR MY INTERVIEW PREPARATION..SIR PLEASE SEND ME THE PDF FILE OF ALL THE TOPIC…, SIR HOW I CAN COPY THESE NOTES PLZ SEND ME THE WAY I CAN DOWNLOAD IT. com OR choudharyindrajit15@gmail.com (6) Liquid metals (b) 60% (a) Aluminium (d) Copper (c) zero temperature coefficient How then is current established almost the instant a circuit is closed. (a) I2Rt (a) positive temperature coefficient None of the above, Resistance ‘R’ of a wire of length “L” is given by the relation R=ρL/A. Ans: a, 23. CBSE and UP Board Offline Apps and Solutions are updated on the basis of latest NCERT Books for 2020-21. (c) Both lamps will glow equally bright (c) 40 W It’s very useful for interview and competitive exams. (c) carbon resistors (d) 132 V useful for the study other state and India level exams like SSC Jen, BSNL Je (a) ampere-hours (d) none of the above When will be the current flows in a circuit? Ans: a, 117. electric currentD. (c) Mercury (c) nickel and chromium It is the convention that the direction of current is opposite to the direction of flow of electron (negative charge). A 3 Q resistor having 2 A current will dissipate the power of In the case of direct current with Solution pdf, SSC JE Civil, Electrical, Mechanical 2018 Question Ans: 49. (a) 1.2 x 10~8 Q-m I think these all questions are most important. When a steady current flows in a metallic conductor of non-uniform cross-section, the current flowing through the conductor is constant. sir ,please send all electrical objective question in pdf formate i need very urgent for preparing junior engineer my email id -mihir92eee@gmail.com
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