If charge +Q is located in space at the point (x = 1 m, y = 10 m, z = 5 m), what is the total electric flux that passes through the *yz*-plane?

Electricity and Magnetism Quiz

Quiz
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Education
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University
•
Hard
Arailym Tanatar
FREE Resource
65 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
∞
1
Q / ε₀
Q / (2ε₀)
0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A point charge Q is placed at the center of a hollow, conducting spherical shell of inner radius a and outer radius b, as shown above. A net charge q is placed on the conducting shell. If the electric potential is assumed to be 0 at infinity, the magnitude of the electric potential at r, where a < r < b, is
0
Q / (4πε₀r)
(Q + q) / (4πε₀r)
Q / (4πε₀a)
(Q + q) / (4πε₀b)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The figure above shows three arrangements of one electron (e) and two protons (p). Which of the following is true about the magnitude F of the net electrostatic force acting on the electron due to the protons?
F₁ > F₂ > F₃
F₁ = F₂ > F₃
F₁ > F₃ > F₂
F₂ > F₁ > F₃
F₂ > F₃ > F₁
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A series AC circuit with impedance Z consists of resistor R, inductor L, and capacitor C, as shown above. The ideal emf source has a sinusoidal output given by E = Eₐₓ sin(ωt), and the current is given by I = Iₐₓ sin(ωt − φ). What is the average power dissipated in the circuit? (I₍ᵣ₎ is the root-mean-square current.)
I²ᵣ R
½ I²ᵣ R
½ I²ᵣ Z
½ I²ᵣ R cosφ
½ I²ᵣ Z cosφ
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The quantum efficiency of a photon detector is 0.1. If 100 photons are sent into the detector, one after the other, the detector will detect photons
exactly 10 times
an average of 10 times, with an rms deviation of about 0.1
an average of 10 times, with an rms deviation of about 1
an average of 10 times, with an rms deviation of about 2
an average of 10 times, with an rms deviation of about 3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two students perform an experiment in which they drop a ball from rest from a known height above the ground and measure the speed of the ball just before it strikes the ground. From repeated measurement, the students estimate the uncertainty in the measured speed of the ball to be 10 percent. Which of the following gives the uncertainty in the kinetic energy of the ball? (Assume the uncertainty in the ball’s mass is negligibly small.)
5%
10%
15%
20%
40%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following wave functions represents a solution to the Schrödinger equation for an electron in the 2s state of a hydrogen atom? (c is a constant and a₀ is the Bohr radius.)
c cosθ
c exp(−r / a₀)
c (1 − r / 2a₀) exp(−r / 2a₀)
c (1 − r / 2a₀) exp(−r / 2a₀) cosθ
c (1 − r / 2a₀) exp(−r / 2a₀) sinθ exp(±iφ)
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