Objective Questions

Questions (1819)

#	Question	Topic	Actions
1101	The electric intensity due to positive point charge is always directed?	Last Minute Prep	View
1102	In Faraday's law of induction (ε = - N ΔΦ/Δt), the minus sign is an expression …	Last Minute Prep	View
1103	Which one of the following options (A-D) will not result in an induced current?	Last Minute Prep	View
1104	Capacitance 15F and 5F are connected in parallel across a 20V battery. What is …	Last Minute Prep	View
1105	Which of the following is an insulator?	Last Minute Prep	View
1106	A 20kΩ resistor is connected in series with a resistance of 40kΩ. What resistan…	Last Minute Prep	View
1107	Determine the most possible relationship between q1 and q2 in figure B	Last Minute Prep	View
1108	A wire of length 2.5m carrying a current of 1.3A is inclined at an angle θ to t…	Last Minute Prep	View
1109	The force per unit charge is known as?	Last Minute Prep	View
1110	The equation of a current is given by i = 1 sin 2πt. The frequency of the curre…	Last Minute Prep	View
1111	Which of the following is the correct about flux from a point charge? I. It is …	Last Minute Prep	View
1112	The magnetic field produced near the current-carrying conductor is	Last Minute Prep	View
1113	What is the relation between current and voltage in a capacitor?	Last Minute Prep	View
1114	Suppose I have a uniform electric field within a parallel plate capacitor with …	Last Minute Prep	View
1115	What is the main function of a transistor?	Last Minute Prep	View
1116	If the separation of plates of a parallel plate capacitor is halved, its capaci…	Last Minute Prep	View
1117	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
1118	A resistor, 100Ω, is connected to an a.c. source ν = 350 sin ωt. If ω = 1256 ra…	Last Minute Prep	View
1119	A positive charge particle with mass m=10mg and charge Q=0.10mC is placed near …	Last Minute Prep	View
1120	The difference between an insulator and a semiconductor is	Last Minute Prep	View
1121	A galvanometer of 50Ω gives full scale deflection with 2mA current. To convert …	Last Minute Prep	View
1122	Flux density is defined by	Last Minute Prep	View
1123	In the figure below, a, b are: (a) (+,-) (b) (+,+)	Last Minute Prep	View
1124	A parallel plate capacitor has an area of 2000cm², plates 1cm apart. Original V…	Last Minute Prep	View
1125	A series R-L-C circuit has R = 100Ω, L = 0.5H, C = 10μF connected to a 50Hz sou…	Last Minute Prep	View
1126	Which is the correct relationship between PEAK and R.M.S. value?	Last Minute Prep	View
1127	Two charges q₁ = 15μC and q₂ = 17μC are within a spherical surface radius 20cm.…	Last Minute Prep	View
1128	The potential of a charge in two dimensions is V(x,y) = 3x + 4y. Determine the …	Last Minute Prep	View
1129	"The sum of the emfs and potential differences around a closed loop equals zero…	Last Minute Prep	View
1130	The apparent power developed in an R-L circuit is 30VA. If source is 36V, 50Hz …	Last Minute Prep	View
1131	It is important to boost generated current before transmission. The transformer…	Last Minute Prep	View
1132	Four capacitors C₁ = 2μF, C₂ = 3μF, C₃ = 4μF, C₄ = 5μF are connected as shown. …	Last Minute Prep	View
1133	A parallel plate capacitor has area 2000cm², plates 1cm apart. Original V₀ = 30…	Last Minute Prep	View
1134	A pentavalent impurity has	Last Minute Prep	View
1135	If a 50μF capacitor is connected across ν = 30 sin(2000πt) volts. What is the f…	Last Minute Prep	View
1136	A sinusoidal voltage V(t) = 200 sin ωt is applied to a series RLC with L = 10mH…	Last Minute Prep	View
1137	The plates of a parallel-plate capacitor are 2mm apart, 5m² in area, in vacuum.…	Last Minute Prep	View
1138	A 2μF capacitor charged to 50V is discharged through a 1MΩ resistor. Find time …	Last Minute Prep	View
1139	An inductor connected to 24V, 50Hz source causes 0.5A to flow. Determine induct…	Last Minute Prep	View
1140	A 2-μF and a 1-μF capacitor are in series and charged. They store charges P and…	Last Minute Prep	View
1141	The plane of a conducting loop is parallel to x-y plane. B-field is in z-direct…	Last Minute Prep	View
1142	What do you observe when a negatively charged rod is brought near a positively …	Last Minute Prep	View
1143	An electric motor connected to 240V draws 15A. Armature resistance 0.15Ω. Calcu…	Last Minute Prep	View
1144	In a semiconductor crystal, if current flows due to breakage of crystal bonds, …	Last Minute Prep	View
1145	Quantity that is not affected by the magnetic field is	Last Minute Prep	View
1146	Which instrument is most accurate for comparing e.m.f. of two cells?	Last Minute Prep	View
1147	In Fleming's left hand rule, thumb shows direction of	Last Minute Prep	View
1148	A 2F and a 4F capacitor are in series. What single capacitance is equivalent?	Last Minute Prep	View
1149	The process by which an emf is induced in a conductor when there is a change in…	Last Minute Prep	View
1150	The apparent power in an R-L circuit is 30VA. Source 36V, 50Hz, resistor 40Ω. D…	Last Minute Prep	View
1151	Find the work done (in eV) in taking qₑ = 20μC from X to Y if potential differe…	Last Minute Prep	View
1152	A wire carries 30A current, 5cm long. Maximum force in B=0.8T is?	Last Minute Prep	View
1153	Which factor does NOT affect capacitance?	Last Minute Prep	View
1154	A dielectric slab is inserted between plates of a parallel plate capacitor whil…	Last Minute Prep	View
1155	Which of the following is not true?	Last Minute Prep	View
1156	How much current does a 60W bulb draw at 240V?	Last Minute Prep	View
1157	Two identical batteries, each 18V and 1Ω internal, wired in parallel across a 4…	Last Minute Prep	View
1158	The equation of alternating current is i = 42.4 sin 628t. The average value is	Last Minute Prep	View
1159	Electric field strength enclosed by Gaussian surface is	Last Minute Prep	View
1160	The equation of a sinusoidal voltage is V = 320 sin ωt. Calculate the r.m.s. va…	Last Minute Prep	View
1161	When current in a coil is doubled and turns halved, the magnetic field at its c…	Last Minute Prep	View
1162	A straight conductor 25cm moves at 30m/s in 0.4T field. If resistance is 0.8Ω, …	Last Minute Prep	View
1163	Characteristics of lines of force include: i. they do not intersect; ii. they s…	Last Minute Prep	View
1164	In case the charges are similar, the force is of?	Last Minute Prep	View
1165	Two wires A and B have identical lengths and material. Wire A has four times re…	Last Minute Prep	View
1166	Primary coil of transformer supplied with 45V. Ratio of turns (primary: seconda…	Last Minute Prep	View
1167	Introducing a non-conducting medium between two charges, the force between them?	Last Minute Prep	View
1168	The electric flux, Φ, is defined as ...	Last Minute Prep	View
1169	A 200V battery charges a capacitor C. It is discharged through a coil in a bloc…	Last Minute Prep	View
1170	If two charges are similar, Coulomb's law implies force F is: I. attractive; II…	Last Minute Prep	View
1171	Which is/are correct? I. reverse biasing withdraws holes from N-type; II. rever…	Last Minute Prep	View
1172	Which is NOT a condition for resonance in R-C-L series circuit?	Last Minute Prep	View
1173	In an antique auto, a 6V battery supplies 48W to two identical headlights in pa…	Last Minute Prep	View
1174	Two charges 1C and 3C are 1.5m apart. What is the force?	Last Minute Prep	View
1175	A positive charge moving with constant velocity v enters a uniform B-field poin…	Last Minute Prep	View
1176	The magnitude of induced emf in a coil depends on: I. number of turns; II. fric…	Last Minute Prep	View
1177	A capacitor C 'has a charge Q'. Actual charges on its plates are:	Last Minute Prep	View
1178	Which is TRUE about the valence band of phosphorus in an N-type semiconductor?	Last Minute Prep	View
1179	Capacitance is directly proportional to the area of?	Last Minute Prep	View
1180	Which assumptions were made by Coulomb? I. bodies small compared to distance; I…	Last Minute Prep	View
1181	Which circuit element stores energy in electromagnetic field?	Last Minute Prep	View
1182	1 Ohm is the ratio of?	Last Minute Prep	View
1183	Which instrument is used for measuring potential difference?	Last Minute Prep	View
1184	At what distance of separation would the attractive force between a positive an…	Last Minute Prep	View
1185	As compared to short wires, long wires have ....	Last Minute Prep	View
1186	Which statement describes an example of induced magnetism?	Last Minute Prep	View
1187	If a 50μF capacitor is connected across v = 30 sin(2000πt) volts. What is the p…	Last Minute Prep	View
1188	What is the unit of temperature coefficient?	Last Minute Prep	View
1189	Determine the force on an electron (charge 1.6×10^-19 C) in a uniform electric …	Last Minute Prep	View
1190	The equation of a sinusoidal waveform is I = 15 sin(ωt). Calculate the r.m.s va…	Last Minute Prep	View
1191	The number of electrons in the valence shell of a semiconductor is	Last Minute Prep	View
1192	Resistances of 2Ω, 4Ω, 6Ω and a 24V source are all in parallel. Current in the …	Last Minute Prep	View
1193	In an RLC series phasor, we start drawing the phasor from which quantity?	Last Minute Prep	View
1194	What is the electric flux through a sphere of radius 4m that contains 50μC?	Last Minute Prep	View
1195	The capacitance of a capacitor is the ratio of	Last Minute Prep	View
1196	A parallel plate air capacitor is made of 0.2m square plates, 1cm apart, connec…	Last Minute Prep	View
1197	When capacitors are connected in series, the equivalent capacitance is ... each…	Last Minute Prep	View
1198	Magnetic flux through a loop increases as Φ_B = 6.0t² + 7.0t (mWb). Magnitude o…	Last Minute Prep	View
1199	Three resistors (2Ω, 4Ω, 5Ω) in parallel across 20V. Find total current.	Last Minute Prep	View
1200	In a circuit containing an emf, a resistor, and an inductor, where is the magne…	Last Minute Prep	View

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