Question

Circle the FALSE statement.

Select one:

a. When an electric current exists in an inductor, energy is stored in the magnetic field that surrounds it.

b. A resistor stores energy in the electric and magnetic fields that surrounds it when an electric current exists in it .

c. A charged capacitor stores energy in the electric field between the plates.

d. In a circuit containing an inductor and capacitor and oscillations are taking place, energy is alternately stored in the inductor and the capacitor.

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Question 27

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A generator applies an alternating emf E(t) = 25.4 V sin(w_dt) to a circuit. The resulting current in the circuit is  i(t) = 36.0 mA sin(w_dt - 15.6°). Determine the average power that is delivered by the generator.

Select one:

a. 0.44 W  

b. 1.66 W   

c. 2.15 W.   

d. 0.77 W   

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Question 28

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Determine the force (magnitude and direction) on an a–particle that is traveling at a speed of 25.6 x10⁶ m/s in the +x axis direction and suddenly enters a uniform 3.60 T magnetic field that is oriented, in the plane of the paper, at 35.8 degrees with respect to the +x-axis.
Note: an a–particle consists of 2 protons, each having charge of +e, and two neutrons, each having charge 0.

Select one:

a. 1.73 x 10^-11 N, out of the paper.   

b. 4.22 x 10^-11 N, into the paper.   

c. 2.21 x 10^-11 N, out of the paper.   

d. 3.11 x 10^-11 N, out of the paper.   

Answer 1