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Marina CMI [18]
3 years ago
7

Two parallel conducting plates are connected to a constant voltage source. The magnitude of the electric field between the plate

s is 2,000 N/C. If the voltage is doubled and the distance between the plates is reduced to 1/5 the original distance, the magnitude of the new electric field is
A) 800 N/C
B) 1600 N/C
C) 2400 N/C
D) 5000 N/C
E) 20000 N/C
Physics
1 answer:
garik1379 [7]3 years ago
3 0

Answer:

E)  E₂= 20000 N/C

Explanation:

The electric field between two parallel conductive plates is thus calculated

E= V/d

Where:

E: Electric field (N/C)

V:  voltage (V)

d : distance between the plates (m)

Problem development

E₁= V₁/d₁  = 2000 N/C

E₂= V₂/d₂

E_{2} = \frac{2V_{1} }{\frac{d_{1} }{5} }

E_{2} = 10(\frac{V_{1} }{d_{1} })

E₂= 10* (2000)

E₂= 20000 N/C

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NISA [10]

Answer:

B = 0.8 T

Explanation:

It is given that,

Radius of circular loop, r = 0.75 m

Current in the loop, I = 3 A

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When the orientation of the normal to the loop with respect to the direction of the magnetic field is 25°, the torque on the coil is 1.8 Nm.

We need to find the magnitude of the uniform magnetic field exerting this torque on the loop. Torque acting on the loop is given by :

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B=\dfrac{\tau}{NIA\sin\theta}\\\\B=\dfrac{1.8}{1\times \pi \times (0.75)^2\times 3\times \sin(25)}\\\\B=0.8\ T

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6 0
3 years ago
Two identical conducting spheres, A and B, carry equal charge. They are separated by a distance much larger than their diameters
Vesnalui [34]

Answer:

C. \frac{3F}{8}

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When the sphere C is touched by A, the final charges on both will be,\frac{q}{2}

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q_c=q_d=\frac{q/2+q}{2}\\\\=\frac{3q}{4}\\

Now the force between A and B is calculated as:

F\prime=\frac{k\times\frac{q}{2}\times \frac{3q}{4}}{d^2}\\F\prime=\frac{3F}{8}

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Which of these would be considered a drawback of hydroelectric power in an area that previously did not have access to this ener
SpyIntel [72]
Simple the answer is A and only 2 ones
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Can I get help and an explanation on C?
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