The primary coil of an ideal transformer has 600 turns and its secondary coil has 150 turns. If the current in the primary coil is 2 A, what is the current in its secondary coil?
A) 8 A B) 2 A C) 1/2 A D) 4 A E) 1/4 A
A
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An example of a convective cloud is the
A) nimbostratus. B) cumulus. C) cirrocumulus. D) altostratus.
Organisms designated as producers usually obtain their energy from:
a. other producers b. dead consumers c. decomposers d. the environment e. themselves
A step-up transformer in an electrical circuit can step up _______.
(a) Voltage (b) Energy (c) Both of these (d) Neither of these.
Which of the following discoveries would cause us to re-evaluate the nebular theory for forming planets?
A) A star has 20 planets. B) A star has zero planets. C) Of the star's five terrestrial planets, one has a large moon. D) Two of the star's planets are rotating in directions backwards compared to their orbital direction. E) A star's 5 terrestrial planets orbit in the opposite direction of its 3 jovian planets.