In nuclear power plants, the nuclear energy is used to make steam which is then used to produce electricity
Indicate whether the statement is true or false
TRUE
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A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.The power consumed by the light bulb in watts is
a. 0.05 b. 20. c. 720 d. none of the above.
A long straight wire carries a current of 40 A in a region where a uniform external magnetic field has a 30-?T magnitude and is parallel to the current. What is the magnitude of the resultant magnetic field at a point that is 20 cm from the wire?
a. 70 ?T b. 40 ?T c. 10 ?T d. 50 ?T e. 36 ?T
Addition by 1. Components: Four vectors, 
, 
, 
, and 
, are shown in the figure. The sum of these four vectors is a vector having magnitude and direction 
A. 4.0 cm, along +x-axis. B. 4.0 cm, along -x-axis. C. 4.0 cm, along +y-axis. D. 4.0 cm, along -y-axis. E. 4.0 cm, 45° above +x-axis.
The capacitance per unit length of a coaxial cable, made of two concentric cylinders, is 50 pF/m. What is the radius of the outer cylinder if the radius of the inner one is 1.0 mm?
A) 3.0 mm B) 2.0 mm C) 4.0 mm D) 0.50 mm E) 1.0 mm