Recently Active Electricity And Magnetism Questions

2 beams one of electrons and the other of protons would 1. attract each other 2. repel each other 3. cant say 4. dunno ...

*Image* d equilanet capacity of d infinite net work shown in d fig is each capacity is 1nu F hey frnds i dont know which is in series with what capacitance & which is in parallel with can any 1 give a detailed explanation plz ...

A pendulum bob of mass 80mg and carrying a charge of 2 X 10-8 C is at rest in a uniform,horizontal electric field of 20kV/m . Find the tension in the string. ...

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*Image* 1.total charges on all capacitors=q1.total charge moved through the battery=q2.q1 and q2 add up to 16μC. and differs by 2μC.then x=? a.1/3 b.1/2 c.2/3 d.3/2 2..an infinite sheet has asurface charge density of 2 \tim ...

Consider a uniformly charged ring of radius R. Find the point on the axis where the electric field is max ? ...

Pls Explain The following to me: 1)Is there any lower limit to the electric force between 2 particles placed at a separation of 1cm? 2)Consider 2 particles A and B having equal charges and placed at some distance.the particle ...

the potential of a certain electrostatic field has the form a. φ= a(x2+y2)+bz2 what shapes have the equipotential surfaces hsve , in the following cases: 1.a>0 b>0 2.a>0 b<0 ? please give an explanation also ! ...

two wires carrying equal currents is placed prependicular to each other .one is fixed n one is free to move wat kind of motion ll result? ...

the magnetic field inside a tightly wound long solenoid is b=μni .it suggests field does not depend on the length of solenoid .if we add more loops at the end of solenoid the field shud nt increase .explain qualitatively why ...

A pendulum bob of mass 80mg and carrying a charge of 2 X 10-8 C is at rest in a uniform,horizontal electric field of 20kV/m . Find the tension in the string. ...

When there is 1 pos. & 1 neg. charge we are sure that the dir. of the electric field is from (+)ve to (-)ve.. But when both are positive or both are negative how exactly do we find the direction ?? ...

Consider a uniforml charged ring of radius R. Find the point on the axis where the electric field is max ? ...

*Image* Q.1 find the workdone in moving a point charge 2nC frm A to B , if y=6 cm , x= 8cm , q1= 20/3 , q2= -20/3. Q.2 three identical metal plates with large surface areas r kept parallel to each other as shown. the leftmost ...

two wires carrying current may attract each other .in absence of other forces they ll move towards each other wid increasing kinetic energy.does it contradict wid the fact ttht magnetic field does no wrk n hence cant increase ...

consider a long,straight wire of cross section a carrying current i .let there be n free electrons per unit volume .an observer places himself on a trolley moving in direction opposite to current with a speedv=i/nAe n separat ...

a charged metal sphere with potential V and radius r is enveloped by a thin walled conduction spherical shell of radius R . The potential of the sphere after it has been connected for a short time to shell by a conductor will ...

a charge q is distributed uniformly throughout a non conducting shperical volume of radius R. show that the potential at a dist. a frm the centre where a < R , is given by V = q(3R2 - a2)/8πεo R3 ...

a non conducting ring of radius 0.5 m carries a total charge of 1.11*10-10 C distributed non uniformly on it's circumference producing electric field E vector everywhere in the space . the value of the line integral ∫ -E. d ...

*Image* three identical parallel conducting plates A,B and C are placed as shown . switches are connected to A and C which can connect them to the earth if closed. +q charge is given to B . please consider the following optio ...

Take a system of two conductors of any shape and size with charges Q1 and Q2 and potentials V1 and V2.Let q be the charge that would flow from the conductor when they are shorted.Prove that the quantity q/(V1-V2) is a constan ...

A particle is initially situated at origin . It starts moving with a velocity v towards right .During motion a force F always acts on the body towards left . given coefficient of friction μ , find the time taken by particle ...

Each of the two long parallel threads carries a uniform charge λ per unit length. The threads are separated by a distane l. Find the maximum magnitude of the electric field strength in the symmetry plane of this system locat ...

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how to find velocity of electron around a uniform positive charge wire where linear charge is lamda ...

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While reading Fundamentals of Physics by Resnick Halliday.. I encountered a particular Explanation on pg 527 that I haven't understood properly.. It is given that the electric field of a dipole decreases more rapidly with dis ...

1. *Image* AJ=40cm.when R1&R2 are interchanged ,AJ'=30cm.thenAB= a.70cm b.75cm c.100cm d.125cm 2. *Image* the potential at A is 3 times the e.m.f of 1 of the cells.the ratio of the two emfs a.2:1 b.3:1 c.4:1 d.5:1 3. *Image* ...