Electric field and Gauss's Law

Electric field and Gauss's Law

Assessment

Assessment

Created by

Kaan Guven

Physics

University

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10 questions

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1.

Multiple Select

1 min

1 pt

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Three charges that can move only along the x-axis are placed successively with equal spacing are found to be equilibrium. Which of the following holds?

q1 and q3 must have the same sign

q1 and q3 must have the same amount

q2 = q1/4

q2=4q1

2.

Multiple Choice

1 min

1 pt

Media Image

A 1m long wire with uniform charge density creates some electric field at 1m distance from its center. By what factor does the electric field change if the wire is replaced by an infinitely long one with same charge density?

3.

Multiple Choice

1 min

1 pt

Media Image

A uniformly charged rod extending the left edge of the unit square creates and electric field E1 at upper corner. If the rod is placed to the bottom edge of the square, which of the following is true about the new electric field E2 at the same corner?

E2x = E1x

E2y = E1y

E2x = E1y

E2y = E1x

4.

Multiple Choice

1 min

1 pt

Media Image

An electric dipole p = 2 nCm is placed at 150o to a uniform electric field E = 1 V/m. How much work in nJ does the electric field until the dipole reaches to equilibrium?

5.

Multiple Choice

1 min

1 pt

Gauss's law in electrostatics is about...

total electric field on a closed surface

total electric flux through a closed surface

total electric field in a volume

total electric flux in a volume

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