Objective Questions

Questions (1820)

#	Question	Topic	Actions
601	A series R-L-C circuit has R = 100Ω, L = 0.5H, C = 10μF connected to a 50Hz sou…	Last Minute Prep	View
602	Which is the correct relationship between PEAK and R.M.S. value?	Last Minute Prep	View
603	Two charges q₁ = 15μC and q₂ = 17μC are within a spherical surface radius 20cm.…	Last Minute Prep	View
604	The potential of a charge in two dimensions is V(x,y) = 3x + 4y. Determine the …	Last Minute Prep	View
605	The plane of a conducting loop is parallel to x-y plane. B-field is in z-direct…	Last Minute Prep	View
606	What do you observe when a negatively charged rod is brought near a positively …	Last Minute Prep	View
607	An electric motor connected to 240V draws 15A. Armature resistance 0.15Ω. Calcu…	Last Minute Prep	View
608	In a semiconductor crystal, if current flows due to breakage of crystal bonds, …	Last Minute Prep	View
609	Quantity that is not affected by the magnetic field is	Last Minute Prep	View
610	Which instrument is most accurate for comparing e.m.f. of two cells?	Last Minute Prep	View
611	In Fleming's left hand rule, thumb shows direction of	Last Minute Prep	View
612	A 2F and a 4F capacitor are in series. What single capacitance is equivalent?	Last Minute Prep	View
613	A wire carries 30A current, 5cm long. Maximum force in B=0.8T is?	Last Minute Prep	View
614	Which factor does NOT affect capacitance?	Last Minute Prep	View
615	A dielectric slab is inserted between plates of a parallel plate capacitor whil…	Last Minute Prep	View
616	Which of the following is not true?	Last Minute Prep	View
617	Primary coil of transformer supplied with 45V. Ratio of turns (primary: seconda…	Last Minute Prep	View
618	Introducing a non-conducting medium between two charges, the force between them?	Last Minute Prep	View
619	The electric flux, Φ, is defined as ...	Last Minute Prep	View
620	A 200V battery charges a capacitor C. It is discharged through a coil in a bloc…	Last Minute Prep	View
621	If two charges are similar, Coulomb's law implies force F is: I. attractive; II…	Last Minute Prep	View
622	Which is NOT a condition for resonance in R-C-L series circuit?	Last Minute Prep	View
623	In an antique auto, a 6V battery supplies 48W to two identical headlights in pa…	Last Minute Prep	View
624	Two charges 1C and 3C are 1.5m apart. What is the force?	Last Minute Prep	View
625	A positive charge moving with constant velocity v enters a uniform B-field poin…	Last Minute Prep	View
626	The magnitude of induced emf in a coil depends on: I. number of turns; II. fric…	Last Minute Prep	View
627	A capacitor C 'has a charge Q'. Actual charges on its plates are:	Last Minute Prep	View
628	Which is TRUE about the valence band of phosphorus in an N-type semiconductor?	Last Minute Prep	View
629	At what distance of separation would the attractive force between a positive an…	Last Minute Prep	View
630	Which statement describes an example of induced magnetism?	Last Minute Prep	View
631	If a 50μF capacitor is connected across v = 30 sin(2000πt) volts. What is the p…	Last Minute Prep	View
632	What is the unit of temperature coefficient?	Last Minute Prep	View
633	What is the electric flux through a sphere of radius 4m that contains 50μC?	Last Minute Prep	View
634	When cells are connected in parallel,	Last Minute Prep	View
635	The strength of a semiconductor crystal comes from	Last Minute Prep	View
636	F = BIL can only be used if magnetic field and electric current are	Last Minute Prep	View
637	When a diode is forward biased, the depletion region...	Last Minute Prep	View
638	In intrinsic semiconductors at room temperature, the number of electrons and ho…	Last Minute Prep	View
639	In order to increase range of ammeter, value of shunt resistance R_s is	Last Minute Prep	View
640	A current of 0.3 A is passed through a lamp for 2 minutes using a 6-V power sup…	Last Minute Prep	View
641	The process by which an emf and hence current is generated or induced in a cond…	PHY 102 Past Questions	View
642	The electric field associated with a uniformly charged hollow metallic sphere i…	PHY 102 Past Questions	View
643	In a parallel-plate capacitor, the distance d between the plates is 3cm, the ar…	PHY 102 Past Questions	View
644	Which of the following circuit elements stores energy in an electromagnetic fie…	PHY 102 Past Questions	View
645	Which of the following is the correct relationship between the PEAK value and t…	PHY 102 Past Questions	View
646	An equipotential surface is adjacent points with:	PHY 102 Past Questions	View
647	The energy band in which free electrons exist is:	PHY 102 Past Questions	View
648	The force per unit charge is known as:	PHY 102 Past Questions	View
649	The area under the current-time graph is equivalent to:	PHY 102 Past Questions	View
650	The phenomenon of producing an induced emf with the aid of a magnetic field is …	PHY 102 Past Questions	View
651	A Hall probe is made up of:	PHY 102 Past Questions	View
652	Find the potential difference required to give a helium nucleus (charge q = 3.2…	PHY 102 Past Questions	View
653	Which of the following is true for an A.C. circuit?	PHY 102 Past Questions	View
654	What are you likely to observe when a negatively charged rod is brought near th…	PHY 102 Past Questions	View
655	If the resistance of a wire is R, and the wire is stretched to double its lengt…	PHY 102 Past Questions	View
656	In a parallel-plate capacitor, the distance d between the plates is 3cm, the ar…	PHY 102 Past Questions	View
657	Which of the following is the correct relationship between PEAK value and R.M.S…	PHY 102 Past Questions	View
658	Calculate the flux through a coil loop of area 0.45m² when its plane…	PHY 102 Past Questions	View
659	The energy band in which free electrons exist is the:	PHY 102 Past Questions	View
660	A Hall probe is made up of a:	PHY 102 Past Questions	View
661	The equation of a sinusoidal waveform is given by I = 15sin(ωt). Calculat…	PHY 102 Past Questions	View
662	An electrostatic paint has a 200mm diameter metal sphere at a potential of 25KV…	PHY 102 Past Questions	View
663	Find the potential difference required to give a helium nucleus (q = 3.2 x 10	PHY 102 Past Questions	View
664	The electric field intensity of 100 N/C is applied on a circular surface area o…	PHY 102 Past Questions	View
665	In a parallel-plate capacitor, the distance d between the plates is 3cm, the ar…	PHY 102 Past Questions	View
666	The process by which an emf and hence current is generated or induced in a cond…	PHY 102 Past Questions	View
667	The energy band in which free electrons exist is	PHY 102 Past Questions	View
668	The equation of a sinusoidal waveform is given by I = 15sin ωt. Calculate…	PHY 102 Past Questions	View
669	Find the potential difference required to give a helium nucleus (q = 3.2 x 10	PHY 102 Past Questions	View
670	In a parallel-plate capacitor, the distance d between the plates is 3cm, the ar…	PHY 102 Past Questions	View
671	Calculate the flux through a coil loop of area 0.45m² when its plane…	PHY 102 Past Questions	View
672	The equation of a sinusoidal waveform is given by I = 15sin ωt. Calculate the r…	PHY 102 Past Questions	View
673	Find the potential difference required to give a helium nucleus (q = 3.2 x 10	PHY 102 Past Questions	View
674	The electric field intensity of 100 N/C is applied on circular surface area at …	PHY 102 Past Questions	View
675	The magnitude of induced e.m.f is proportional to	PHY 102 Past Questions	View
676	Which of the following is correct about Coulomb's law? I. The bodies were sm…	PHY 102 Past Questions	View
677	An electron in the conduction band	PHY 102 Past Questions	View
678	Calculate the total resistance between the points A and B of the given circuit.…	PHY 102 Past Questions	View
679	Why is electrical energy usually transmitted at high voltage?	PHY 102 Past Questions	View
680	A series R-L-C circuit has R=10 Ω, L=0.5H and C=10μC. Calculate the frequency f…	PHY 102 Past Questions	View
681	A battery of fixed emf E and internal resistance r is connected to a variable e…	PHY 102 Past Questions	View
682	When a battery, a resistor, a switch, and an inductor form a circuit, and the s…	PHY 102 Past Questions	View
683	A copper coil has a resistance of 200 ohms when its mean temperature is 0 degre…	PHY 102 Past Questions	View
684	What is a Gaussian surface?	Gauss's Law and Electrostatic Fields	View
685	What is the electric field inside a hollow charged conducting sphere?	Gauss's Law and Electrostatic Fields	View
686	For a hollow charged sphere, what is the electric field outside the sphere?	Gauss's Law and Electrostatic Fields	View
687	Which of the following statements is true about a hollow conducting sphere in e…	Gauss's Law and Electrostatic Fields	View
688	What is the electric field at the center of a uniformly charged solid non-condu…	Gauss's Law and Electrostatic Fields	View
689	What is the electric field just outside a charged conducting sphere (radius a, …	Gauss's Law and Electrostatic Fields	View
690	What is the electric field inside a charged conducting sphere (solid or hollow)?	Gauss's Law and Electrostatic Fields	View
691	For a charged conducting plane of infinite extent with surface charge density σ…	Gauss's Law and Electrostatic Fields	View
692	For a charged non-conducting sheet (insulating sheet) with uniform surface char…	Gauss's Law and Electrostatic Fields	View
693	What is the electric field inside a parallel plate capacitor (between the plate…	Gauss's Law and Electrostatic Fields	View
694	What is the capacitance of a parallel plate capacitor with plate area A and sep…	Gauss's Law and Electrostatic Fields	View
695	If the plate area of a parallel plate capacitor is doubled, what happens to the…	Gauss's Law and Electrostatic Fields	View
696	A parallel plate air capacitor is made using two plates 0.2 m² spaced 1 cm apar…	PHY 102 Past Questions	View
697	Magnitude of induced e.m.f is proportional to	PHY 102 Past Questions	View
698	What is the relationship between electric field E and electric potential V in o…	Gauss's Law and Electrostatic Fields	View
699	For a uniform electric field E between parallel plates separated by distance d,…	Gauss's Law and Electrostatic Fields	View
700	A charged particle of mass m and charge q enters a uniform electric field E per…	Gauss's Law and Electrostatic Fields	View

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Questions (1820)