Birds can perch safely on overhead electric power cables without being electrocuted because
A
birds can withstand high p.d. of the electric power cables
B
any accumulated charge on the birds is quickly dissipated
C
the feet of the birds are well insulated
D
the current is a.c. and has particular direction
E
there is no p.d between the birds and the cables
Verified Correct Answer: E.
Physical Principles & Numerical Solution
A bird remains safe on a single wire because it has only one point of contact, keeping it at a single electrical potential. However, if the bird touches another object with a different potential, it would complete a path to the ground, resulting in severe electric shock or electrocution.
Source: Myschool Past Questions Archive (Record #24153)