An electric dipole with dipole moment `vec p=(3hat i+4hat j)C-m` is kept in electric field `vec E=0.4kN/Chat i`.What is the torque acting on it & the potential energy of the dipole? (A) `1600(N times m)hat k,-1200J` (B) `-1600(N times m)hat k,1200J` (C) `-1600(N times m)hat k,-1200J` (D) `1600(N times m)hat k,1200J`

[" An electric dipole with dipole moment "],[vec p=(hat 3+4hat jmath)C-m," is kept in electric field "],[vec E=0.4kN/Chat i" .What is the torque acting "],[" on it & the potential energy of the dipole? "],[[" (A) "1600(N times m)hat k,-1200J],[" (B) "-1600(N times m)hat k,1200J],[" (C) ",-1600(N times m)hat k,-1200J],[" (D) ",1600(N times m)hat k,1200J]]

An electric dipole moment vec P = ( 2. 0 hat I + 3 . 0 hat j) mu C . M is placed in a usifrom electric field vec E = (3 hat I + 2 . 0hat k ) xx 10^5 N C^(-1) .

A "bar" magnet of moment bar(M)=hat(i)+hat(j) is placed in a magnetic field induction vec(B)=3hat(i)+4hat(j)+4hat(k) . The torque acting on the magnet is

Find the magnitude of vector vec a=(3hat k+4hat j)xx(hat i+hat j-hat k)

Find the magnitude of vector vec a=(3hat k+4hat j)xx(hat i+hat j-hat k)

If vec A=2hat i+3hat j-hat k and vec B=-hat i+3hat j+4hat k ,then projection of A on B will be (n)/(sqrt(26)) then n is

If vec a*hat i=4, then the value of vec a{hat j xx(2hat j-3widehat K)} is equal to

If vec a*hat i=4, then the value of vec a*{hat j xx(2hat j-3hat k)} is equal to

If vec adot hat i=vec ahat i+hat j=vec ahat i+dot hat j+hat k=1, then vec a=vec 0 b.hat i c.hat j d.hat i+hat j+hat k

An electric dipole of moment overset(r )( P) = (hat( i) + 3 hat(j) -5 hat(k ) ) xx 10^(-19 ) Cm is kept in a electric field overset( r )( E ) = = ( 2hat( i) - 3 hat( j )+2 hat( k) ) xx 10^(5) V- m . Find torque experienced by dipole.