The number of protons in the nucleus of an electrically neutral atom is equal to
the number of neutrons in the nucleus.
the number of electrons surrounding the nucleus.
the number of electrons in the nucleus.
None of the other choices is correct.
Electrical and gravitational forces follow similar equations with one main difference:
Electrical forces obey the inverse square law and gravitational forces do not.
Gravitational forces obey the inverse square law and electrical forces do not.
Electrical forces attract and gravitational forces repel.
Gravitational forces are always attractive but electrical forces can be attractive or
repulsive. Answer: D
13) The circuit below contains three 100 watt light bulbs. The emf E = 110 V. Which light bulb(s) is(are) the brightest?
B and C
All three are equally bright.
14) Which two circuits are exactly equivalent?