Objective Questions

Questions (1820)

#	Question	Topic	Actions
501	A parallel plate air capacitor is made of 0.2 m square tin plates and 1 cm apar…	PHY 102 Past Questions	View
502	Calculate the total resistance between the points A and B, given the following …	PHY 102 Past Questions	View
503	Which of the following is not true about doping of semiconductors?	PHY 102 Past Questions	View
504	The power dissipated by a 72 Ω resistor connected to a sinusoidal a.c. source i…	PHY 102 Past Questions	View
505	Which of the following is true about intrinsic semiconductors? i. Each semi…	PHY 102 Past Questions	View
506	An alternating voltage whose peak value is 80 volts is connected across a 60 oh…	PHY 102 Past Questions	View
507	The battery connection required to forward bias a PN junction is:	PHY 102 Past Questions	View
508	KCL (Kirchhoff's Current Law) is applied at __________.	PHY 102 Past Questions	View
509	In intrinsic semiconductors at room temperature, the number of electrons and ho…	PHY 102 Past Questions	View
510	A small object carrying a charge of 5 x 10⁻⁹ C experiences a downward force of …	PHY 102 Past Questions	View
511	The derived unit Tesla is related to which of the following base units?	PHY 102 Past Questions	View
512	Which of the following statements is NOT true about doping of semiconductors?	PHY 102 Past Questions	View
513	Ohm's law can be used only to a _________ circuit or component.	PHY 102 Past Questions	View
514	Which of the following is true about intrinsic semiconductor? i. Each semico…	PHY 102 Past Questions	View
515	An alternating voltage whose peak value is 80 volts is connected across a 60 oh…	PHY 102 Past Questions	View
516	Calculate the force on a wire of length 5 cm carrying a current of 30 A if it i…	PHY 102 Past Questions	View
517	The constant k, which appears in Coulomb's law formula (F = k * q1*q2 / r^2), i…	PHY 102 Past Questions	View
518	KCL (Kirchhoff's Current Law) is applied at _________.	PHY 102 Past Questions	View
519	The phenomenon of producing an induced emf with the aid of a magnetic field is …	PHY 102 Past Questions	View
520	In intrinsic semiconductors at room temperature, the number of electrons and ho…	PHY 102 Past Questions	View
521	Which of the following is true about an electric dipole?	PHY 102 Past Questions	View
522	A small object carrying a charge of 5 x 10^-9 C experiences a downward force of…	PHY 102 Past Questions	View
523	Which of the following is not true about doping of semiconductor?	PHY 102 Past Questions	View
524	Ohm's law can be used only to a ________ circuit or component	PHY 102 Past Questions	View
525	Which of the following is true about intrinsic semiconductor? i. Each semic…	PHY 102 Past Questions	View
526	The constant k_e, which appears in Coulomb's law formula, is equivale…	PHY 102 Past Questions	View
527	KCL is applied at ....................	PHY 102 Past Questions	View
528	Calculate the total resistance between the points A and B for the circuit shown…	PHY 102 Past Questions	View
529	Which of the following is true about intrinsic semiconductor? i. Each semic…	PHY 102 Past Questions	View
530	The battery connection required to forward bias a PN junction are:	PHY 102 Past Questions	View
531	KCL is applied at ........................	PHY 102 Past Questions	View
532	Ohm's law can be used only to a ______ circuit or component.	PHY 102 Past Questions	View
533	Which of the following is true about electric dipole:	PHY 102 Past Questions	View
534	What is the magnitude of a point charge whose electric field 50 cm away has mag…	PHY 102 Past Questions	View
535	A 3.0 mF and a 13.0 mF capacitor are connected in series, and the series arrang…	PHY 102 Past Questions	View
536	The phenomenon of producing an induced emf with the aid of a magnetic field is …	PHY 102 Past Questions	View
537	In intrinsic semiconductors at room temperature, the number of electrons and ho…	PHY 102 Past Questions	View
538	If the two charges are similar, then Coulomb's law implies that the force F is:	PHY 102 Past Questions	View
539	A transformer which is 80% efficient gives an output of 12V and 4A. What is the…	PHY 102 Past Questions	View
540	Energy stored in a 2000mF capacitor charged to a potential difference of 10V is?	PHY 102 Past Questions	View
541	The direction of induced emf can be found by	Last Minute Prep	View
542	When capacitors are connected in series ....remains the same.	Last Minute Prep	View
543	When reverse voltage increases from 2 V to about 5 V, the depletion region	Last Minute Prep	View
544	Energy stored in 2000mF capacitor charged to a potential difference of 10V is?	Last Minute Prep	View
545	An a.c circuit has a peak voltage of 100V, across a 50Ω resistor. What are the …	Last Minute Prep	View
546	The direction of field strength at any point is	Last Minute Prep	View
547	A car battery is rated at 80 A·h. An ampere-hour is a unit of:	Last Minute Prep	View
548	The dimensions of plates of a parallel plate capacitor are 8cm by 8cm and they …	Last Minute Prep	View
549	A 20-μF capacitor is charged to 200 V. Its stored energy is:	Last Minute Prep	View
550	Find the distance between point charges q₁ = 26.0 μC and q₂ = 47.0 μC, if a for…	Last Minute Prep	View
551	When a dielectric is placed in an electric field, it becomes?	Last Minute Prep	View
552	What part will surely tell that given motor is DC motor and not an AC type?	Last Minute Prep	View
553	A combination of three equal resistances in series is equivalent to 90 W. What …	Last Minute Prep	View
554	A length of wire has a resistance of 10 ohms. What is the resistance of a wire …	Last Minute Prep	View
555	A parallel plate capacitor has a capacitance C. The area of the plate is double…	Last Minute Prep	View
556	The distance between two positive charges 6 mC and 8 mC is 50 cm. Calculate the…	Last Minute Prep	View
557	Which of the following is true about p-n junction diode? i. Forward bias curren…	Last Minute Prep	View
558	Light bulb has input power consumption of 50 watts. The light bulb was activate…	Last Minute Prep	View
559	In the depletion region of a pn junction, there is shortage of	Last Minute Prep	View
560	A capacitor of 22μF and a resistor of 200Ω are connected in series across a 12V…	Last Minute Prep	View
561	Electric field is steepest in the direction in which the potential	Last Minute Prep	View
562	Find the force on two equal charges if they repel each other with a force of 0.…	Last Minute Prep	View
563	A PN junction acts as a	Last Minute Prep	View
564	A circular ring 5cm in radius has a positive charge of 3×10⁻⁷ C. Compute the el…	Last Minute Prep	View
565	The reciprocal of resistivity is	Last Minute Prep	View
566	In a semiconductor, current conduction is due to	Last Minute Prep	View
567	A potential difference of 240V is applied across a coil driven by 8A. Calculate…	Last Minute Prep	View
568	Which copper conductor has the least resistance?	Last Minute Prep	View
569	Unraveling an electromagnet gives	Last Minute Prep	View
570	It takes 500W to operate a machine whose output is 480W. What is the efficiency?	Last Minute Prep	View
571	Electric spark is observed between two plates 2.5cm apart in air at 60kV. Deter…	Last Minute Prep	View
572	A 6 mF and a 3 mF capacitor are in series across 18V. Calculate charge on each.	Last Minute Prep	View
573	Which is true about depletion layer in p-n junction?	Last Minute Prep	View
574	Magnetic Field lines move from	Last Minute Prep	View
575	Determine the force between two protons placed 1μm apart.	Last Minute Prep	View
576	A long wire bent into a circle of one turn gives field B at centre. It is then …	Last Minute Prep	View
577	Two charges q₁=15μC and q₂=17μC are within a spherical surface radius 20cm. Cal…	Last Minute Prep	View
578	A Wheatstone bridge is balanced when current through galvanometer is....?	Last Minute Prep	View
579	In a series circuit, which parameter remains constant across all elements?	Last Minute Prep	View
580	Lenz' law states that direction of induced emf	Last Minute Prep	View
581	The presence of a dielectric between capacitor plates results in?	Last Minute Prep	View
582	KCL deals with the conservation of?	Last Minute Prep	View
583	The resistance of pure metals	Last Minute Prep	View
584	A car battery is rated at 80 A-h. An ampere-hour is a unit of:	Last Minute Prep	View
585	Find the distance between point charges q1 = 26.0 μC and q2 = 47.0 μC, if a for…	Last Minute Prep	View
586	The distance between two positive charges 6mC and 8mC is 50cm. Calculate the el…	Last Minute Prep	View
587	In Faraday's law of induction (ε = - N ΔΦ/Δt), the minus sign is an expression …	Last Minute Prep	View
588	Which one of the following options (A-D) will not result in an induced current?	Last Minute Prep	View
589	The magnetic field produced near the current-carrying conductor is	Last Minute Prep	View
590	What is the relation between current and voltage in a capacitor?	Last Minute Prep	View
591	Suppose I have a uniform electric field within a parallel plate capacitor with …	Last Minute Prep	View
592	What is the main function of a transistor?	Last Minute Prep	View
593	If the separation of plates of a parallel plate capacitor is halved, its capaci…	Last Minute Prep	View
594	A loop of wire of 25 turns has an area of 2.0×10^-2 m². A current of 1.25 A flo…	Last Minute Prep	View
595	A resistor, 100Ω, is connected to an a.c. source ν = 350 sin ωt. If ω = 1256 ra…	Last Minute Prep	View
596	A positive charge particle with mass m=10mg and charge Q=0.10mC is placed near …	Last Minute Prep	View
597	The difference between an insulator and a semiconductor is	Last Minute Prep	View
598	A galvanometer of 50Ω gives full scale deflection with 2mA current. To convert …	Last Minute Prep	View
599	In the figure below, a, b are: (a) (+,-) (b) (+,+)	Last Minute Prep	View
600	A parallel plate capacitor has an area of 2000cm², plates 1cm apart. Original V…	Last Minute Prep	View

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