920: The figure shows two connected wires that are made of the same material. The current entering the wire on the left is 2 A and in that wire the electron drift speed is What is the electron drift speed in the wire on the right side? (A) =/4 (D) 4% (B) 2% (C)/2 1.5
920: The figure shows two connected wires that are made of the same material. The current entering the wire on the left is 2 A and in that wire the electron drift speed is What is the electron drift speed in the wire on the right side? (A) =/4 (D) 4% (B) 2% (C)/2 1.5
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Physics, pleaseeeeeeeee solve question 20
Transcribed Image Text:010: An electron moves from point A to point B under the influence of an electrostatic force only. The
electric potential difference between A and B is, V-F-60 RV, the change in potential energy - is
in 10-15:
(A)-14.4
(B)-9.6
(-128
())-112
Q11: The voltage on 22 resistor is, in V.
2.000 A
www
1.00
18.0 3.00
3)
4,000
(A) 10.7
(B) 28.4
(C) 2.0
(D) 3.3
Q12: If R-2 k2, C-4 mF, e-8 V. Q-20 mC, and /-3 mA,
what is the potential difference s-Va, in V:
(A) 11
(B) 12
(C) 10
(D) 9
Q13: Which is of the following units equivalent to T (Tesla)?
(A) N/A.m
(B) A.m/N
(C) C.m/N.2 (D) N./c.m²
Q14: What is the current passing through the 20-2 resistor when
8-20 V, in A?
300
NO
NO
20 (1
(A) 0.43
(B) 0.29
(C) 0.57
(D) 0.71
Q15: A battery with an emf of 12 V and internal resistance of 0.9 2 is connected across a load resistor R. If
the current in the circuit is 1.4 A, what is the voltage across the battery, in V?
(A) 16.74
(B) 14.74
(C) 10.74
(D) 12.74
Q16: Charge of uniform density (3.5 nC/m²) is distributed on a surface of conducting sphere of radius Im.
Determine the electric potential (relative to zero at infinity) at the center of the sphere, in V:
(A) 508,5
(B) 565.0
(C) 452.0
(D) 395,5
Q17: Suppose you have two negative point charges. As you move them farther and farther apart, the potential
energy of this system relative to infinity:
(A) increases
(B) remains zero
(C) remains the same
(D) decreases
Q18: Two charges q₁ = 4pC and q2 = 6pC are located inside a spherical shell of radius I, the electric flux,
in Nm²/C,through a spherical surface is?
(A) 1.58
(B) 1.36
(C) 1.13
(D) 0
Q19: Calculate the total electric flux through the side surface (S) due
to a uniform electric field of magnitude E, in the direction shown in
Figure?
E..
(A) 0
(B) nr² E
(C)-²E₂
(D) 2mr²B
020: The figure shows two connected wires that are made of the same material. The
current entering the wire on the
tis 2 A and in that wire the electron drift speed is
What is the electron drift speed in the wire on the right side?
(A) v/4
(B) 2%
(C)/2
(D) 4%
300
1.5
28mm
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