Series/Parallel Circuits: A 4.0-? resistor is connected with a 12-? resistor and both of these are connected across an ideal dc power supply with voltage V as shown in the figure. If the total current in this circuit is I = 2.0 A, what is the current through the 4.0-? resistor?

A. 2.0 A
B. 2.5 A
C. 0.5 A
D. 3.0 A
E. 1.5 A


Answer: E

Physics & Space Science

You might also like to view...

Which isotopes are radioactive?

A) none B) some C) all D) even numbered E) odd numbered

Physics & Space Science

Consider two current-carrying circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other

If the magnetic field strength at the center of the smaller loop is B, what is the magnetic field strength at the center of the larger loop? A) 8B B) 4B C) 2B D) B/2 E) B/4

Physics & Space Science

Which is the latest stage (of those given below) in the evolution of a star?

A) red giant B) white dwarf C) protostar D) geodesic E) supernova

Physics & Space Science

The person who expounded the uncertainty principle was

a. Max Planck b. Albert Einstein c. Neils Bohr d. Erwin Schroedinger e. Werner Heisenberg.

Physics & Space Science