When a biro pen rubbed on a dry silk cloth is moved very close to a piece of paper on a dry table, the pen is found to pick up the paper. This is because
A
both the pen and the cloth are magnetized
B
the pen is magnetized but the cloth is not
C
the pen is charged while the cloth is magnetized
D
both the pen and the cloth are charged
Verified Correct Answer: D.
Physical Principles & Numerical Solution
They are all charged either positively or negatively
Source: Myschool Past Questions Archive (Record #27931)