Recently Active Electricity And Magnetism Questions

The electric strength of air is 2*107 NC-1. The maximum that a metallic sphere of diameter 6 mm can hold is: (a)3 nC (b)20 nC (c)1.5 nC (d)2 nC ...

What do the left gap and the right gap in a meter bridge mean? Q: In a meter bridge with a standard resistance of 5Ω in the left gap the ratio of balancing lengths of the bridge wire is 2:3 the unknown resistance is? ...

Identical particles of charge q and mass m are fixed at the corners of a cube .One of the charges is released.What is its kinetic energy when it is far off from the rest of the charge?? ...

Some operations which can be performed on a capacitor are defined below : A : Connect the capacitor to a battery of emf E B : Disconnect the battery C : Reconnect the battery with polarity reversed D : Insert a dielectric sla ...

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hi, we know that electric field inside the conductor is zero. but why is it so? why charges move to the surface. anyone please reply..... ...

Q : The potential in a region varies as V = 4x2. Find the charge (in C) enclosed by a cube of side 1 m having its center at Origin. ...

N concentric thin conducting shells having radius R , R/2 , R/22 , ...... is placed . N th shell is earthed . if Q charge is given to the outer shell , find the charge on the inner most shell . ...

How does our phone make out that this much % of battery is left, any method you know, pls share, no answers found till now please.... ...

A metal sphere of radius R is charged to a potential V . FIND THE ELECTROSTATIC ENERGY STORED IN THE ELECTRIC FIELD WITHIN A CONCENTRIC SPHERE OF RADIUS 2R? ANSWER GIVEN- 2πƐ RV2 MY ANSWER-πƐRV2 :P ...

*Image* The I-V characteristics of a metal wire at two temperatures is shown, then a) T1>T2 b) T2>T1 c) T1=T2 d) The relation may vary ...

Hi all, get relevant and useful flash animations in physics at http://www.mksfoundation.com/flashlets.aspx and lot of other free stuff for JEE preparation at this site. ...

Give the waveform of an AC Wave which has form factor less than 1 ? ...

*Image* i am getting 6 answer given is 2 ...

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What to do and what not to do in the last month before IIT-JEE http://www.youtube.com/watch?v=Z5-AfiJxjOc&context=C4acfebbADvjVQa1PpcFMQX-FKsRHXxJDA7RTt_k4sN1NL6Iapsuo= ...

my ans is not matching.. *Image* ...

The smooth circular pipe is kept fixed in a horizontal plane . If mass m with charge +q is slightly displaced from the position shown then the distance travelled by the ball when the magnitude of normal reaction becomes minim ...

*Image* Capacitor A is of 4 microfarad and B is of 2 microfarad. B is charged to 12 V and then connected to A. Find the heat transfer from one capacitor to another. ...

We solve many circuits where many DC sources (eg cells) are connected in series/parallel. Have you ever wondered where you could do the same with AC Sources as well? Check out! It's really interesting. ...

A satellite is revolving around the Earth in a circular orbit with radius of 2R, where R is radius of earth.If suddenly,its velocity becomes zero in the orbit due to collision with some inter-stellar object(like a satellite), ...

A conducting metal balloon of Radius ' R ', essentially of negligible mass is charged with charge ' Q '. It has to carry a payload of mass ' M '. Find how the charge ' Q ' and the Intrinsic Energy ' W ' of the balloon depends ...

1)a long straight wire carries a current i.let B1 b the magnetic field at a pointt P at a distance "d" frm the wire ..consider a sec of length "l" of this wire such that point P lies on perpendicular bisector of the section . ...

1)a long straight wire carries a current i.let B1 b the magnetic field at a pointt P at a distance "d" frm the wire ..consider a sec of length "l" of this wire such that point P lies on perpendicular bisector of the section . ...

A square loop of side length ' a ' , mass ' m ' and Resistance ' R ' enters a uniform magnetic field (B=B0 (-k)) with velocity ' v° ' at t = 0 sec Plot the variation of ' v ' with the distance from O ( Assume that ' v ' is e ...

i am stuck in solving the problem question no 39 in magnetic field of hcv part 2 a particle of mass m and charge q is projected into a region having a perpendicular magnetic field b.find the angle of deviation of the particle ...

Find the effective value of the alternating current that changes according to the law : I = Io when 0 < t < T/8 I = 0 when T/8 < t < T/2 I = -Io when T/2 < t < 5T/8 I = 0 when 5T/8 < t < T I = Io when ...

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*Image* the question states this........ there is an incomplete loop moving in a uniform magnetic field with a speed v...... the loop between points p and q is not complete find the potntial diffrence between pnt p and q ...

*Image* In the adjoining figure, If the INPUT is a Square Wave, the Output wave will look like : ...