Question What is meant by electric field electric field intensity?
NU Year 2012
Question What is an electric dipole? Find the electric strength of a dipole at any point along the dipole axis.
NU Year 2012
Question Define the flux of an electric field. Show that Coulomb’s Law can be deduced from Gauss’s Law for a spherical Gaussia surface.
NU Year 2012
Question What repulsive Coulomb force exists between two protons in a nucleus of iron? Assume a separation of 4.0 x 10^-5 meter.
NU Year 2012
Question State and explain Gauss’s Law.
NU Year 2012
Question How Coulomb’s Law can be deduced from Gauss‘s Law and considerations of symmetry?
NU Year 2012
Question Two point charges of unknown magnitude and sign are a distance d apart. The electric field strength is zero at one point between them, on the line joining them. What can you conclude about the charges?
NU Year 2012
Question What is the relationship between electric field and electric potential?
NU Year 2012
Question Define Magnetic field strength and flux density.
NU Year 2012
Question Find out the expression for magnetic force acting on a current carrying wire of certain length.
NU Year 2012
Question What is dielectric? Deduce the expression of Gauss’s Law, when a dielectric is present in the electric field.
NU Year 2012
Question A rectangular carbon block has dimensions 1.0cm x 1.0cm x 50cm :(i) What is the resistance measured between the two square ends?(ii) Between two opposing rectangular faces? The resistvity of carbon at 20°C is 3.5x10^-5 Ohm-m.
NU Year 2012
Question What do you mean by hysteresis & eddy current losses?
Question What do you mean by hysteresis & eddy current losses?
NU Year 2012
Question Distinguish between diamagnetism, para magnetism and ferromagnetism.
NU Year 2012
Question Explain Biot-savart Law & express it in vector form and also state & explain Ampere’s Law.
NU Year 2012
Question Derive the expression of torque on a rectangular current loop immersed in a uniform magnetic field.
NU Year 2012
Question Describe Hysteresis curve of Magnetization.
NU Year 2012
Question What is represented by the area of the hysteresis loop?
NU Year 2012
Question A flux of 0.5 mWb is produced by a coil of 900 tums wound on a ring with a current of 3A in it. Calculate.(i) the inductance of the coil;(ii) the e.m.f. induced in the coil when a current of 5A is switched off, assuming the current to fall to zero in 1 millisecond; and(iii) the mutual inductance between the coils. if a second coil of 600 turns is uniformly wound over the first coil.
NU Year 2012
Question Define Electromotive Force and Time Constant.
NU Year 2012
Question Find out the expression for potential due to a point charge.
NU Year 2012
Question How the capacitance of a parallel plate capacitor can be measured?
NU Year 2012
Question A long solinoid has 200 turns/cm and carries a current of 1.5 amp. its diameter is 3.0 cm. At its center we place a 100-turn, close-packed coil if diameter 2.0 cm. This coil is arranged so that B at the centre of the solinoid is parallel to its axis. The current in the solinoid is reduced to zero and then raised to 1.5 amp in the other direction at a steady rate over a period of 0.050sec. What induced e.m.f appears in the coil while the current is being changed?
NU Year 2012
Question Define-(i) Charge density;(ii) Electric field strength.
NU Year 2011
Question Deduce an expression of electric field intensity due to a long straight uniformly charged wire.
NU Year 2011
Question State and explain Coulomb‘s law.
NU Year 2011
Question Calculate the electrostatic force between two x particles when at a distance of 10^-13 m from each other. Charge of an x particle is 3.2 x 10^-12 C.
NU Year 2011
Question Define dielectric constant and time constant.
NU Year 2011
Question Find the expression for the potential energy of a dipole placed in on electric field.
NU Year 2011
Question Deduce an expression for torque (t) and potential energy (u) by an electric dipole placed in an uniform electric field
NU Year 2011
Question Define the terms current, voltage and EMF
NU Year 2011
Question State and explain Ampere's law
NU Year 2011
Question What is capacitance? Calculate the capacitance of a parallelplate capacitor
NU Year 2011
Question Derive an expression for the energy stored in a charged capacitor
NU Year 2011
Question The parallel plates of an air-filled capacitor are everywhere 1.0mm apart . What must the plate area be if the capacitance is to be 1.0 farad?
NU Year 2011
Question Define magnetic field
NU Year 2011
Question Calculate magnetic field along the axis of circular coil
NU Year 2011
Question Explain magnetic field for a solenoid
NU Year 2011
Question Define self inductance
NU Year 2011
Question Find out self inductance and mutual inductance
NU Year 2011
Question State and explain Ohm's law
NU Year 2011
Question Draw an RC circuit and explain transient response of the circuit
NU Year 2011
Question A flat strip of copper of width a and negligible thickness carrying a current i ,find the magnetic field at a distance R from the center of the strip , at right anglesto the strip
NU Year 2011
Question Define Electric potential. Quantized charge.
NU Year 2014
Question Calculate E for points on the axis of the ring a distance x from its center.
NU Year 2014
Question Explain Gauss’s Law of electrostatics and deduce Columb's Law for Gauss's Law.
NU Year 2014
Question What repulsive Coulomb force exists bemoan two protons' in a nucleus of iron? Assume a separation of 4-0 x 10^-15m.
NU Year 2014
Question What is an electric dipole? Find the electric field strength of a dipole at any point along the dipole axis.
NU Year 2014
Question What is a capacitor? Define the SI. unit of capacitance.
NU Year 2014
Question Draw and explain basic operation of the WheatstoneBridge
Institute Daffodil Institute of IT Diit logo.png Motto Bring international Education to You Type Private Established 1997 Chairman Md. Sabur Khan Academic staff 50 Students 1000 Address 19/1, (Dolphin 2015
Question What is Hall Voltage? Explain the Hall Effect with appropriate diagram.
Institute Tejgaon College 2015
Question Distinguish between diamagnetism, paramagnetism and ferromagnetism.
Institute Tejgaon College 2015
Question What is electric potential and potential difference? Calculate the potential due to a point charge.
Institute Tejgaon College 2015
Question Explain how potential difference can be calculated from field strength.
Institute Tejgaon College 2015
Question Find the electric potential for points on the axis of a uniformly charged circular disk with surface charge density
Institute Tejgaon College 2015
Question What is equipotential surface?
Institute Tejgaon College 2015
Question Define three electric vectors. Derive an expression relating to three electric vectors
Institute Tejgaon College 2015
Question Define EMF, Current density, Resistivity, Inductance
Institute Tejgaon College 2015
Question Let Hypothetical cylinder of radius R immersed in a uniform electric field axis being parallel to the field. What is omega E for this close surface?
Institute Tejgaon College 2015
Question Derive the transient response of an RL-circuit and define time consant.
Institute Tejgaon College 2015
Question If the value of inductor of an RL circuit is 10mH then for what value of R the time consant of the circuit will be 1 ms?
Institute Tejgaon College 2015
Question Derive the expression for the energy stored in magnetic field
Institute Tejgaon College 2015
Question What is the solenoid? Derive the expression for the value of B of a solenoid.
Institute Tejgaon College 2015
Question If a 7.0 MeV proton moves vertically downward through a field, what will be the Kinetic energy act on it?
Institute Tejgaon College 2015
Question State and explain Lenz's law.
Institute Tejgaon College 2015
Question State and explain Lenz's Law.
Institute Tejgaon College 2015
Question What is electric dipole? Deduce an expression for torque and potential energy by electric dipole placed in a uniform electric field.
Institute Tejgaon College 2015
Question Define electric dipole moment. Calculate the electric field of the dipole at point p a distance x along the perpendicular bisector of the diople.
Institute Tejgaon College 2015
Question Derive the expression for the force developed on a current carrying conductor in a magnetic field.
Institute Tejgaon College 2015
Question Calculate the amount of torque produced on a current carrying lool placed in a magnetic field.
Institute Tejgaon College 2015
Question Describe the construction of a galvanometer and describe its operation.
Institute Tejgaon College 2015
Question State and explain Ohm's law.
Institute Tejgaon College 2015
Question If y=sin (m sin-1x) then show that, (1-x2)yn+2-(2n+1)xyn+1 +(m2-n2)yn=0.
Institute Dhaka City College 2012
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Institute Shaikh Burhanuddin Post Graduate College 2007