Recently Active Electricity And Magnetism Questions

A rigid insulated wire frame in the form of a right angle triangle,ABC is set in a vertical plane as shown in figure.Two beads of equal masses m and carrying charges q1 and q2 are connected by a cord of lenght l and can slide ...

Suppose a disc of radius a placed on the ground with uniform surface charge density s with its axis vertical.A charged particle is dropped from a height H from the ground along the axis of the disc.Initially the particle is a ...

voltmeters V1 and V2 are connected in series across a d.c. line . V1 reads 80V and has a per volt resistance of 200 ohm , V2 has a total resistance of 32000 ohm . the line voltage is ...

Figure below shows six concentric conducting spheres A,B,C,D,E and F with radii R,2R,3R,4R,5R and 6R respectively.Conducting spheres B and C & D and E are connected using conducting wires as shown in figure.Find the equivalen ...

A system of four equal charges is placed on a table forming a square.The configuration which satisfy the condition that electric field at point on the axis passing through the centre and perpendicular to the plane of the squa ...

Three charges of equal magnitude are placed at the corners of an equilateral triangle ABC.The configuration of charges in which resultant electric field is towards point A is: (A)+++ (B)+-+ (C)-++ (D)++- ...

Suppose,A belt of iron is tied along the diameter of the earth...after a gap of 6cm,another belt is tied around the earth...a coin of rs.1 is dropped between the gap,will the coin hit the ground? ...

problem no. of i e irodov -3.144 *Image* this problem is also in hc verma solved examples last question but the answer is different in hcv in hcv it is solved by force method i tried it by energy using energy of capacitor ini ...

why we connect a resistor having a high resistance in series with coil of voltmeter?? ...

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1)It is said that separation between the two charges forming the dipole should be small, but small compared to what? 2)The electric potential decreases uniformly from 120 V to 80V as one moves on the X axis from -1 cm to +1cm ...

*Image* CALCULATE CHARGE AT EQUILIBRIUM WHEN BOTH BALOONS HAVE = CHARGE ...

2007 IIT-JEE question Q- A spherical portion has been removed from non-conducting solid sphere having charge uniformly distributed in its volume as shown in the figure.The electric field inside the emptied space is (A) zero e ...

*Image* we need to find the equivalent resistance b/w A and B. ...

1- electric fld between plates of parallel capacitor is 2.and charg on two plates are 10 and 3?find force on 1 of plate??? 2-a dipole is placed parallel to x-axis and having coordinate (x,y)...and electric field is non unifor ...

1- electric fld between plates of parallel capacitor is 2.and charg on two plates are 10 and 3?find force on 1 of plate??? 2-a dipole is placed parallel to x-axis and having coordinate (x,y)...and electric field is non unifor ...

A point charge q = 1μC is brought from infinity (slowly so that heat developed in the shell is negligible) and is placed at the centre of a conducting neutral spherical shell of inner radius a = 1m and outer radius b = 2m, t ...

*Image* ans: a) uoI/4r ( 2r2 - a2/4r2 - a2 ) to the left. b) uoI/(pi)r ( 2r2 + a2/4r2 + a2 ) towards the top of the page. ...

Two long parallel wires are at a distance 2d apart. They carry equal steady currents flowing out of the plane of the paper as shown. The variation of the B along the line XX1 is given by- 1st fig or 2nd fig?? Explain along wi ...

can somebody explain me how are these redistributions in the capacitors done for eg *Image* is redistributed as *Image* similar redistribution is done when dielectrics are made in series. what is the concept behind this redis ...

Q1)A particle having charge 2=10^-4 C is placed directly below and at a separation of 10cm from a bob of simple pendulum at rest.The mass of the bob is 100g.What charge should the bob be given so that the string becomes loose ...

Refer HC VERMA CAPACITORS 26) b) I need help in applying star - delta method to the upper 3 capacitors- namely 1,3,4 microF It is basically a Y and we need to transform to delta. I keep getting wrong answers. I got 3 capacita ...

I need help with HC VERMA PART 2 Q46. Initially, the capacitance is C/2 when S is closed, Why will the charge flow through the battery? Is it that the second capacitor gets short circuited? How do we find out whether two plat ...

Q1 A solid sphere has a very small cavity at its center (volume of cavity→0).This cavity contains a source of electric field which varies as E(x) = k/x5 + k'/x3 (where 'x' = radial distance from the center & k,k' are positi ...

A thread carrying a uniform charge lambda per unit length has the configuration shown. Assuming the curvature radius R to be considerably less than the length of the thread, find the magnitude of the electric field strength a ...

why does field of electric dipole have a cylindrical symmetry.also explain w.r.t eqn of field on equatorial axis kp/[(r2+a2]3/2. what does this statement then mean:because of the cylindrical symmetry for the two charge system ...

1)a simple pendulum consists of a small sphere of mass m , has length l, carries chargeQ. It is placed in a uniform electric field E directed vertically upwards.will it execute SHH?What is its time period of oscillation.Pls e ...

Q-1 A point charge q is located a distance d from an infinite plane. Determine the electric flux through the plane due to the point charge. Q-2 A point charge q is located a very small distance from the center of a very large ...

a positive charge q is placed in front of a conducting solid cube at a distance d from its centre. find the electric field at the centre of the cube due to the charges appearing on its surface. ...

hey frnds.... facing a bit of confusion in the concept dat..... when the length of the rod of resisitivity ρ is doubled, what will be the change in the resistance (initially length = l and area of cross-section = A) on doubl ...