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bond order= number of bonding electrons-number of non bonding electrons the whole divided by 2.

first,tell yourself,u can do it.first be thorough with your ncert textbook questions,including the examples,then try sums in HC.and go on to other textbooks.

motional emf is the induced emf obtained by varying the area of a coil in a uniform magnetic field.

E=-rate of change of flux.

in case of a rectangular coil,

E=Blv where B=magnetic field ,l=length of the coil and v=velocitywith which the coil is moved in a magnetc field.direction of current in the coil is given by lenz's law.

im preparing for aieee also,so i have arihant physics for aieee.will that be useful for problem solving in board exam?

how will physics board paper this year?do i need to concentrate mainly on the back questions of ncert book or i need to buy some guide?

allot time for maths everyday.be thorough with your ncert textbook,then go for other books like arihant,comprehensive

with increase in size,electroneagativity decreases.since 2p orbitals are closer to the nucleus than 3p,2p orbitals suffer more repulsion

a wire is bent in the form of a cube.current i passes when a cell is connected from one extreme corner to another.what will be its magnetic field in the middle of the wire

Give reasons

The electron drift speed is estimated to be only a few mm/s . How can such a small speed account for instantaneous current
Is a wire carrying current charged ? Why or why not ?

1) An electric bulb is marked as 100W at 230V. Find the power dissipated if instead of 230V supply the bulb is joined to

460 volt supply
1A constant current source

2)When is the meter-bridge most sensitive?How can a potentiometer be made more sensitive?

wen can u saY E=V-Ir and V=E+Ir?

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1)a certain region of space is to be protected from external field.suggest 2 methods.

2)two point charges Aand B of unkown magnitude and sign are placed d distance apart.the electric field is zero at a point not bet the charges but on line joining them and closer to A.write two essential conditions for this to happen

an electron is placed inside a capacitor of 5microF.it is found to be stationary that is its weight balanced by electrostatic force.find pot dif. across the plates if area is A

plzzzzz somebody help.