Bulbs A, B, C, and D are identical and connected to a battery as shown. The bulb with the least current passing through it is
A. bulb C.
B. bulb A.
C. both bulbs A and B.
D. both bulbs C and D.
Answer: C
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An 80.0 kg climber climbs to the top of Mount Everest, which has a peak height of 8848 m. What is the climber’s potential energy with respect to sea level?
In a fission reaction, such as occurs in a nuclear power plant,
A) thermal energy and other forms of energy are converted to nuclear energy. B) nuclear energy is converted to thermal energy and other forms of energy. C) heat is converted to work. D) nuclear energy is created. E) energy is created.
Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the magnitude of the magnetic field midway between the two wires? (?0 = 4? × 10-7 T ? m/A)
A) 2.0 × 10-5 T B) 4.0 × 10-5 T C) 1.0 × 10-5 T D) 3.0 × 10-5 T E) 5.0 × 10-5 T
The switch is closed in the figure below. After a long time compared with the time constant of the circuit, what will the current be in the 2-V resistor?