Objective Questions

Questions (1820)

#	Question	Topic	Actions
701	A positive charge of 5 μC, mass 2×10⁻⁹ kg, is placed in a uniform electric fiel…	Gauss's Law and Electrostatic Fields	View
702	A charge is launched horizontally into a uniform vertical electric field. The p…	Gauss's Law and Electrostatic Fields	View
703	What is the electric field in the region between two large parallel conducting …	Gauss's Law and Electrostatic Fields	View
704	What is the work done in moving a charge q from point A to point B in an electr…	Gauss's Law and Electrostatic Fields	View
705	What is an equipotential surface?	Gauss's Law and Electrostatic Fields	View
706	What is the direction of the electric field relative to an equipotential surfac…	Gauss's Law and Electrostatic Fields	View
707	For a point charge, what is the shape of the equipotential surfaces?	Gauss's Law and Electrostatic Fields	View
708	What is the electric flux through a closed surface that encloses no net charge?	Gauss's Law and Electrostatic Fields	View
709	What is the SI unit of electric flux?	Gauss's Law and Electrostatic Fields	View
710	What is the electric field at a distance r from an infinitely long line charge …	Gauss's Law and Electrostatic Fields	View
711	What is the electric field due to an infinite plane of charge with surface char…	Gauss's Law and Electrostatic Fields	View
712	For a uniformly charged solid sphere of radius R and total charge Q, what is th…	Gauss's Law and Electrostatic Fields	View
713	Ohm's law can be used only to a ______ circuit or component	PHY 102 Past Questions	View
714	For a uniformly charged solid sphere of radius R and total charge Q, what is th…	Gauss's Law and Electrostatic Fields	View
715	What is the electric field just outside a charged conductor?	Gauss's Law and Electrostatic Fields	View
716	What is the electric field inside a conducting material in electrostatic equili…	Gauss's Law and Electrostatic Fields	View
717	If a positive charge is placed at the center of a hollow conducting sphere, wha…	Gauss's Law and Electrostatic Fields	View
718	What is the potential inside a hollow charged conducting sphere?	Gauss's Law and Electrostatic Fields	View
719	What is a capacitor?	Capacitors and Capacitance	View
720	What is the SI unit of capacitance?	Capacitors and Capacitance	View
721	Which of the following factors does NOT affect the capacitance of a parallel pl…	Capacitors and Capacitance	View
722	What is the formula for the capacitance of a parallel plate capacitor with plat…	Capacitors and Capacitance	View
723	What is the permittivity of free space (ε₀)?	Capacitors and Capacitance	View
724	A parallel plate capacitor has plates of area 0.05 m² separated by 0.001 m with…	Capacitors and Capacitance	View
725	If the area of the plates of a parallel plate capacitor is doubled, what happen…	Capacitors and Capacitance	View
726	If the distance between the plates of a parallel plate capacitor is doubled, wh…	Capacitors and Capacitance	View
727	What is the dielectric constant (K) of a material?	Capacitors and Capacitance	View
728	A parallel plate capacitor with air has capacitance 10 pF. When filled with a d…	Capacitors and Capacitance	View
729	What is the formula for the capacitance of a cylindrical capacitor?	Capacitors and Capacitance	View
730	Three capacitors C₁, C₂, C₃ are connected in series. What is the equivalent cap…	Capacitors and Capacitance	View
731	Three capacitors C₁, C₂, C₃ are connected in parallel. What is the equivalent c…	Capacitors and Capacitance	View
732	A 1 μF and a 2 μF capacitor are connected in series. What is their equivalent c…	Capacitors and Capacitance	View
733	A 1 μF and a 2 μF capacitor are connected in parallel. What is their equivalent…	Capacitors and Capacitance	View
734	For capacitors in series, which statement is true?	Capacitors and Capacitance	View
735	For capacitors in parallel, which statement is true?	Capacitors and Capacitance	View
736	What is the energy stored in a capacitor?	Capacitors and Capacitance	View
737	What is the time constant τ of an RC circuit?	Capacitors and Capacitance	View
738	In an RC charging circuit, after one time constant (t = RC), the capacitor volt…	Capacitors and Capacitance	View
739	In an RC discharging circuit, after one time constant (t = RC), the capacitor v…	Capacitors and Capacitance	View
740	What is the voltage across a capacitor after a long time (in steady state) in a…	Capacitors and Capacitance	View
741	A circuit contains two unequal resistances in parallel.	PHY 102 Past Questions	View
742	The potential of a charge in two dimension is given as V(x,y) = 3x + 4y. Determ…	PHY 102 Past Questions	View
743	Which of the following is correct about Coulomb's law? I. The bodies were sm…	PHY 102 Past Questions	View
744	What is the work required to carry an electron (q = -1.6×10⁻¹⁹ C) from the posi…	Capacitors and Capacitance	View
745	An electron starts from rest and falls through a potential rise of 80 V. What i…	Capacitors and Capacitance	View
746	If the dielectric constant of a material is 5, how does the capacitance compare…	Capacitors and Capacitance	View
747	What is the induced charge density on the surface of a dielectric inserted betw…	Capacitors and Capacitance	View
748	A series R-L-C circuit has R=10 Ω, L=0.5H and C=10μF. Calculate the frequency f…	PHY 102 Past Questions	View
749	A copper coil has a resistance of 200 ohms when its mean temperature is 0 degre…	PHY 102 Past Questions	View
750	How many excess electrons must be placed on each of two small spheres spaced 3 …	PHY 102 Past Questions	View
751	Which of the following is correct about Coulomb's law? I. The bodies were sm…	PHY 102 Past Questions	View
752	Calculate the total resistance between the points A and B. (Circuit consists of…	PHY 102 Past Questions	View
753	A series R-L-C circuit has R=10 Ω, L=0.5H and C=10µF. Calculate the f…	PHY 102 Past Questions	View
754	A copper coil has a resistance of 200 ohms when its mean temperature is 0 degre…	PHY 102 Past Questions	View
755	A parallel plate air capacitor is made using two plates 0.2 m² spaced 1 cm…	PHY 102 Past Questions	View
756	A circuit contains two unequal resistances in parallel	PHY 102 Past Questions	View
757	A parallel plate capacitor has an area of 2000 cm², and the plates are 1 c…	PHY 102 Past Questions	View
758	Let the emf in the primary coil of a transformer be e₁, and emf in the se…	PHY 102 Past Questions	View
759	In a semiconductor crystal, if current flows due to breakage of crystal bonds, …	PHY 102 Past Questions	View
760	A 10µF capacitor is charged by a 24V battery through a 400kΩ resistor. After 1s…	PHY 102 Past Questions	View
761	The emf of a battery is equal to its terminal potential difference:	PHY 102 Past Questions	View
762	An inductor, L = 0.5H, in series with a resistor, R = 250Ω, are connected to an…	PHY 102 Past Questions	View
763	A circular ring 5 cm in radius has a positive charge of 3 x 10^-7 C. …	PHY 102 Past Questions	View
764	An alternating current flowing through a coil produces a magnetic field having	PHY 102 Past Questions	View
765	The quantity (1/2)εεE² has the significance of:	PHY 102 Past Questions	View
766	A given RLC circuit has R=100Ω, L=1H and C=10µF all connected in series with a …	PHY 102 Past Questions	View
767	Two capacitors are identical except that one is filled with air and the other w…	PHY 102 Past Questions	View
768	A 2-µF and a 1-µF capacitor are connected in series and charged from a battery.…	PHY 102 Past Questions	View
769	A long wire carries a steady current. It is bent into a circle of one turn and …	PHY 102 Past Questions	View
770	An electron is situated in a uniform electric field of intensity 1.2 x 10^5…	PHY 102 Past Questions	View
771	Which of the following is the correct about flux from a point charge? I…	PHY 102 Past Questions	View
772	In which of the following does the valence band overlap with the conduction ban…	PHY 102 Past Questions	View
773	What must be the charge (sign and magnitude) of a particle of mass 5 g for it t…	PHY 102 Past Questions	View
774	A 10 µF capacitor is charged by a 24 V battery through a 400 kΩ resistor. After…	PHY 102 Past Questions	View
775	Which of the following statements about doping semiconductors is true? i. D…	PHY 102 Past Questions	View
776	A given RLC circuit has R=100Ω, L=1H and C=10µF all connected in series with a …	PHY 102 Past Questions	View
777	An electron is situated in a uniform electric field of intensity 1.2 x 10^5…	PHY 102 Past Questions	View
778	A uniform electric field of 4.50 kN/C passes through a rectangular surface of a…	PHY 102 Past Questions	View
779	In which of the following does the valence band overlap with the conduction ban…	PHY 102 Past Questions	View
780	The weight of a charge-bearing oil droplet with charge 10¹⁰ e in an …	PHY 102 Past Questions	View
781	The quantity (1/2)εεE² has the significance of:	PHY 102 Past Questions	View
782	A given RLC circuit has R=100Ω, L=1H and C=10µF all connected in series with a …	PHY 102 Past Questions	View
783	According to Faraday's law, which of the following changes will produce an emf …	PHY 102 Past Questions	View
784	A battery of emf 4V and internal resistance of 2 Ohms is joined to a resistor o…	PHY 102 Past Questions	View
785	Which of the following is TRUE of THE APPLICATION OF Gauss's law	PHY 102 Past Questions	View
786	A straight wire of length 0.20 m moves at a speed of 3.0 m s^-1 90° t…	PHY 102 Past Questions	View
787	Which of the following is true? i. Doping of semiconductors improves its co…	PHY 102 Past Questions	View
788	An inductor, L = 0.5H, in series with a resistor, R = 250Ω, are connected to an…	PHY 102 Past Questions	View
789	A given RLC circuit has R=100Ω, L=1H and C=10μF all connected in series with a …	PHY 102 Past Questions	View
790	Two capacitors are identical except that one is filled with air and the other w…	PHY 102 Past Questions	View
791	Answer saved In an RLC series phasor, we start drawing the phasor from which qu…	PHY 102 Past Questions	View
792	The quantity (1/2)ε₀E² has the significance of:	PHY 102 Past Questions	View
793	Calculate the resonant frequency of an R-L-C series circuit with R = 300 Ω, C =…	PHY 102 Past Questions	View
794	In a series circuit, which parameter remains constant across all elements?	PHY 102 Past Questions	View
795	Ohm’s law can be used only for a ______________ circuit or component	PHY 102 Past Questions	View
796	An electron is situated in a uniform electric field of intensity 1.2 x 10^3…	PHY 102 Past Questions	View
797	In a moving coil galvanometer, pole faces of U-shaped magnet are made concave	PHY 102 Past Questions	View
798	A cyclotron is used to	PHY 102 Past Questions	View
799	A cylindrical surface of radius 5cm and height 2.5cm is placed in a uniform ele…	PHY 102 Past Questions	View
800	In a parallel-plate capacitor, the distance d between the plates is 3cm, the ar…	PHY 102 Past Questions	View

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