Question

In a certain region of space, electric field is along the Z-direction
throughout. The magnitude of electric field is, however, not constant
but increases uniformly along the positive z-direction, at the rate of
105NC- per metre. What are the force and torque experienced by a
system having a total dipole moment equal to 107 Cm in the negative
z-direction ?








class 12th physics question....plz don't write useless things​

Answer 1

Answer:

swampu and densed region well nt developed

Answer 2

Explanation:

• Dipole moment of the system, p = q×dl = −10^−7 Cm

• Rate of increase of electric field per unit length,

dE/dl ​= 10^5 NC^−1

• Force (F) experienced by the system is given by the relation,

F = qE

F = (q × dl) × (dE/dl) ​

  =p ×  (dE/dl)

  =10^−7 × 10^−5

  =−10^−2 N

• The force is −10−2N in the negative z-direction i.e., opposite to the direction of electric field. Hence, the angle between electric field and dipole moment is 180°.

• Torque (τ) is given by the relation,

T = pEsin180° = 0

• Therefore, the torque experienced by the system is zero and the force is −10^−2 N

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