Recently Active Electricity And Magnetism Questions

is magnetic force conservative ????????? ...

*Image* find Va-Vb a.3V b.5V c.7V d.9V i m not getting any of the options????? ...

we have a uniformly charged hollow solid hemisphere . A is the centre of the circle which is formed by the edge of the hemisphere. (the radius of the circle is therefore R --- R being radius of the hemisphere) B is a point at ...

*Image* in the given circuit each cell has a internal resistance of 1 ohms. find out the potential difference across the 2 V cell ...

Sam as pratek i also seeks notes on Elctricity-basics only I hav jus given a thought to it ...

there are 4 concentric shells A,B,C,D, OFradii a,2a,3a,4a resp. shells B & D are given charges +q & -q resp. shell C is now earthed .the potential diff. VA-VC ...

charges Q1 &Q2 lies inside & outside respectively of a closed surface S.Let E be the field at any point on S &φ be flux of E over S a)if Q1 changes ,bothE& φ will change b)if Q2 changes ,E will change but φ will not change ...

f f for a spherical shell a)if potential inside it is zero then it necessarily electrically neutral b)electric field in a charged conducting spherical shell can be zero only when the charge is uniformly disturbed c)electric p ...

an electic field converges at the origin whose magnitude is given by the expression E=100r Nt/Coul,where r is dist.measured from origin. a)total charge contained in any spherical vol. with its centre at origin is -ve b)total ...

charges Q1 &Q2 lies inside & outside respectively of a closed surface S.Let E be the field at any point on S &φ be flux of E over S a)if Q1 changes ,bothE& φ will change b)if Q2 changes ,E will change but φ will not change ...

let I be the moment of ineria of a uniform square plate about an axis AB that pases thrpugh the centre & parallel to two of its sides. CD is a line in the plane that passes thru the center of the plate & makes an angle θ wit ...

what is the energy *Image* stored in the capacitor between the terminals a and b of the network shown in the figure ...

A D.C. Pandey Question.. *Image* ...

there a 2 inductors in parallel L1 and L2 and M12 is the mutial inductance . Find equivalent inductance... ...

*Image* what is the charge AND POTENTIAL DIFFERENCE across all the capacitors , each of capacitance C ? ...

a line charge λ is uniformly onto thew rim of a wheel of mass M & radius R. The wheel has light non- conducting spokes & is free to rotate without friction about its axis. A uni form magnetuc field exists over a circular reg ...

Q1. The electric field and electric potential at a point are E and V respectively. (a) If E=0, V must be 0 (b) If V=0, E must be 0 (c) If E≠0, V cannot be zero (d) If V≠0, E cannot be zero. Q2. The electric potential decr ...

Q1. HCV example 18.... given: dipole moment = 3.4*10-30C-m... separation = 10-10m .. find mag. of charge.. simple q = D/d = 3.4*10-20C doubt is how can q have charge less than proton ? Q2. A positive charge q is placed in fro ...

A circuit consists of a permanent source of emf E,a resistor R and a capacitance C connected in series.At t=0,the capacitance of capacitor jumprised abruptly by factor n.Find current in circuit as function of time (Internal r ...

*Image* a conducting wire is bent in d form of a loop as shown. the segments AOB is parabolic given by the eqn y^2 =2x while segment BA is a straight line parallel to the y-axis. the magnetic field in the region is B= - 8 k^ ...

*Image* the voltage time graph is shown. The rms value for the graph is a)V b)V/√2 c)V√(7/24) d)V√(3/8) ...

Q.1 Find B(x,y) in case I so that VA-VB is same for both rods... *Image* AB=L OB=L ..edited.. :p They are pulled by some means with given speed perpendicular to length of rod.. Note:Take only one line in copy at max or no cop ...

A complex circuit consists of some resistors. An ideal current source is then connected through two points at the circuit. Then an ideal voltmeter is connected to two nodes of a resistor in the circuit. Reading of the voltmet ...

define and tell the relations and differerce between(many of them are same) them magnetic field magnetic field intensity magnetic intensity magnetic field strength H-field Intensity of magnetisation magnetic flux magnetic flu ...

An electric lamp which runs 100V dc & comsumes 10A current is connected to ac mains at 150V, 50Hz cycles with a choke coil in series. Calculate the inductance and drop of voltage across the choke. Neglect resistance of choke. ...

an electric lamp which runs at 100 V dc and consumes 10 A current is connected to the ac mains at 150 V , 50 Hz cycles with a choke coil in series .. Calculate the inductance and drop of voltage across the choke. neglect the ...

statement 1 :- in aregion of time varying magnetic field two charges of same magnitude moves from A to B in clockwise and anticlockwise manner . work done in clockwise path is equal to work done in anticlockwise path. *Image* ...

*Image* in the given circuit each cell has a internal resistance of 1 ohms. find out the potential difference across the 2 V cell ...

*Image* Solution : current in R4 and R3 is (6-5)/5=1/5A VCD=VCA=VCB (no current is flowing through R1) V=VCB=E2+iR2=2 + 2/5=12/5A E=(1/2)CV2 ...

Q An electric dipole is kept on the axis of a uniformly charged ring at a distance R/√2 from the centre of the ring . The direction of the dipole moment is along the axis . The dipole moment is P, charge of the ring is Q an ...