A rubber rod is rubbed with fur, so that the fur becomes positive. The rod is then used to charge an electroscope. The charge on the electroscope will be
A. neutral.
B. negative if charged by induction.
C. positive if charged by induction.
D. negative if charged by polarization.
E. positive if charged by contact.
Answer: C
You might also like to view...
When a ferromagnetic material is placed in an external magnetic field, the net magnetic field of its magnetic domains becomes
A) smaller. B) zero. C) larger.
Lisa throws a stone horizontally from the roof edge of a 50. meter high dormitory. It hits the ground at a point 60. m from the building. Find the time of flight
What will be an ideal response?
A circular loop of wire lies in the plane of the paper. An increasing magnetic field points out of the paper. What is the direction of the induced current in the loop?
A) counter-clockwise then clockwise B) clockwise then counter-clockwise C) clockwise D) counter-clockwise E) There is no current induced in the loop.
On March 21, the noonday Sun is overhead at what latitude?
a. 0° b. 23.5°N c. 23.5°S d. That of the Tropic of Cancer