Recently Active Electricity And Magnetism Questions

A simple hcv sum with so much vectors is eating my head.... the concept is right but maths Consider a hypothethical magnetic field in a region B=B0er where er is the radial vector. A circlular loop of raidus a carrying a curr ...

!)A thin conducting wire of radius R has a charge +Q.show that the increase in the tension of the wire when a pt. charge +q is placed at the centre of the ring is given by T=qQ/ 8(pi)2(episilon)R2 2)A simple pendulum consists ...

If a charge q is placed at the centre of line joining two equal like charges Q,the system will be in equilibrium if q is a) -Q/2 b) -Q/4 c) +Q/2 d) +4Q Plz explain yur ans ...... ...

Six charges 3 positive charges and three negative of equal magnitude are to be placed at the vertices of a regular hexagon such that the electric field at O is double the electric field when only one positive charge of same m ...

3 equal charges q are places at the corners of an equilateral triangle f side a . A charge Q is placed such that its distance 4m each corner is r then the force xperienced by Q WILL BE???? 2) 2 parallel plate capacitors of ca ...

I got some serious problems with the answers provided to the following questions- 1. A: The current in RLC circuit driven by a sinusoidal voltage may lead,lag or be in phase with the applied voltage. R: Series resonance does ...

What is the problem with cosine curve? ...

i'm confused, pl help 1]q on left of 1 2] pd b/w 3,4 *Image* ...

*Image* calculate the charge flown through the resistor from time 10 s to 30 s... the resistance is variable.... ...

*Image* plz explain in detail. ...

pls solve it.. *Image* ...

A three end toroid, containing an iron core, is connected into a circuit as shown in the figure. What will the current through switch K be right after closing the switch, if the initial current in the circuit was I0? (The ohm ...

*Image* value of [flux]*[epsilon] through curved surface=?.. i'm getting 56/65 .. pls confrm... ...

Last question of old NCERT : Chapter - EMI A line charge " λ " per unit length is lodged uniformly onto the rim of a wheel of mass " M " and radius " R " . The wheel has light non - conducting spokes and is free to rotate wi ...

the electric field at any point is given by E= ax2i+by2j+cz2k/ax2+by2+cz2 find the flux paasibg thru the solid sphere of radius R with centre at origin. ...

*Image* find force exerted by 1 on 2 and 2 on 1. ...

A uniform magnetic field of intensity 1T is applied in a circular region of radius 0.1 m , directed into the plane of paper . A charged particle of mass 5 x 10 -5 kg and charge q = 5 x 10 -4 C enters the field with vel. 1/roo ...

wen to and wen not to take self energy... eg: a sphere of mass 2m is broken into two spheres of mass m each and kept dist d apart... also does it mattter whether d original sphere was broken inti a sphere and a cube of mass m ...

if 2 identical point charges , dist d apart, are kept. then how do they know to get away from each other??? i mean .... plz explain wid d help of field lines... ...

Find out the self inductance of the following system : A uniformly distributed current 'I' flows through a wire of radius 'a' and returns along the surface of the wire (assume that the surface has a very thin insulation). Als ...

can seniors and teachers suggest a good book specifically for electrostatics like irodov is for general physics ...

in d ques "charge q is located at distance l/2 from the center of square above its center. Determine electric flux through the square ." i know d formal way i.e (cmplete the square into a cube and proceed) but whats wrong i n ...

can seniors and teachers suggest a good book specifically for electrostatics like irodov is for general physics ...

*Image* consider a charge +q kept above an infinite conducting plate that is grounded question : find the surface charge density of the plate as a function of (x,y) Consider the charge to be at a distance of d on +ve z axis a ...

*Image* Here I have a parallel plate capacitor connected to a battery with emf V. Now I pull the plates of the capacitor to increase its plate distance. As I do some work, this work appears as the increase in potential energy ...

can anyone pls derive me the formula of B..MAGNETIC FIELD..OR MAGNETIC INDUCTION in tanA position...i knew the formula...i need its derivation...pls can anyone help in this??? ...

1.A coil of inductance 1H and 10 ohm resistance are connected to a battery of emf 50 V ,The circuit is switched on at t=0.Let dU/dt be the rate at which energy is stored in the inducter,and P0is the power output of battery at ...

True or false: An electric line of force( i.e electric field) in the x-y plane is given by the equation x2 +y 2 =1 . A particle with unit positive charge, initially at rest at (1,0) in the xyplane, will move along the line of ...

1.in a uniform electric field, potential at origin is V, and V/2 at (a,0,0),(0,b,0),(0,0,c).The potential at (a,b,c) 2.A metal sphere of radius r caries a total charge Q, what is the force of repulsion between the two hemisph ...

1)what is meant by radial magnetic field?? 2)while converting galvanometer into ammeter why we connect small resistance parallel to galvanometer? ...