A sample of HCl gas is placed in an electric field of 3 × 104 NC -1. The dipole moment of each HCl molecule is 6 × 10-30 Cm. The maximum torque that can act on a molecule is

Question

A sample of HCl gas is placed in an electric field of 3 × 104 NC -1. The dipole moment of each HCl molecule is 6 × 10-30 Cm. The maximum torque that can act on a molecule is (A) 2 × 10-34 C 2 Nm -1 (B) 2 × 10-34 Nm (C) 18 × 10-26 Nm (D) 0.5 × 1034 C -2 Nm -1

Tardigrade Admin · Accepted Answer

Torque, τ =p × E τ max =p E =6 × 10-30 × 3 × 104 =18 × 10-26 Nm

Q. A sample of $H Cl$ gas is placed in an electric field of $3 \times 1 0^{4} N C^{- 1}$ . The dipole moment of each $H Cl$ molecule is $6 \times 1 0^{- 30} C m$ . The maximum torque that can act on a molecule is

$2 \times 1 0^{- 34} C^{2} N m^{- 1}$

$2 \times 1 0^{- 34} N m$

$18 \times 1 0^{- 26} N m$

$0.5 \times 1 0^{34} C^{- 2} N m^{- 1}$

Torque, $τ = p \times E$
$τ_{m a x} = pE$
$= 6 \times 1 0^{- 30} \times 3 \times 1 0^{4}$
$= 18 \times 1 0^{- 26} N m$

Q. A sample of HCl gas is placed in an electric field of 3×104NC−1. The dipole moment of each HCl molecule is 6×10−30Cm. The maximum torque that can act on a molecule is

2×10−34C2Nm−1

2×10−34Nm

18×10−26Nm

0.5×1034C−2Nm−1