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A parallel plate capacitor was made with two rectangular plates, each with a length of l = 3 cm and breath of b = 1 cm. The distance between the plates is 3 μm. Out of the following, which are the ways to increase the capacitance by a factor of 10 ? 

 A. l = 30 cm, b = 1 cm, d = 1µm 

 B. l = 3 cm, b = 1 cm, d = 30μm 

 C. l = 6 cm, b = 5 cm, d = 3μm 

 D. l = 1 cm, b = 1 cm, d = 10μm 

 E. l = 5 cm, b = 2 cm, d = 1μm 

 Choose the correct answer from the options given below:

(1) C only

(2) A only 

(3) B and D only 

(4) C and E only

1 Answer

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by (74.8k points)
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Best answer

Answer: (4) C and E only

Option 'C' l = 6 cm

b = 5 cm

d = 3 cm

Capacitance = \(10\in_0\) unit

Option 'E' l = 5 cm

b = 2 cm

d = 1 cm

Capacitance = \(10\in_0\) unit

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