Electrostatics Question 317
Question: Two electric dipoles of moment P and 64 P are placed in opposite direction on a line at a distance of 25 cm. The electric field will be zero at point between the dipoles whose distance from the dipole of moment P is [MP PET 2003]
Options:
A) 5 cm
B)
C) 10 cm
D)
Show Answer
Answer:
Correct Answer: A
Solution:
Suppose neutral point N lies at a distance x from dipole of moment p or at a distance x2 from dipole of 64 p. At N |E. F. due to dipole |= |E. F. due to dipole ‚| therefore
therefore
therefore x = 5 cm.
