Finding the Mistake in Calculating Charge on a Capacitor with a Shorted Wire

In summary, the conversation discusses a problem with a shorted wire across two capacitors with different capacitance. The speaker mentions that according to the given information, the charge on one of the capacitors should be 0, but this is not an option. The speaker also mentions that the answer given in the book may be incorrect. Another speaker agrees that the charge on one of the capacitors should be 0 due to the potential difference being 0.
  • #1
Jahnavi
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102

Homework Statement


capacitor2.jpg


Homework Equations

The Attempt at a Solution


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Sorry for the unclear image .

There is a wire across the combination of 2μF and 3μF capacitors which means the two capacitors are shorted . The whole of 6V drops across the 1μF capacitor . In that case charge on the 2μF capacitor should be 0 . But this is not an option .

What is my mistake ?
 

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  • #2
I think it's a wrong answer by the book honestly.
 
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  • #3
Hydrous Caperilla said:
I think it's a wrong answer by the book honestly.

You mean none of the options are correct ?

Do you agree there would be 0 charge on 2μF capacitor ?
 
  • #4
yea because the potential across the capacitor is 0
 
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  • #5
Thanks !
 
  • #6
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1. What is the charge on a capacitor?

The charge on a capacitor is the amount of electrical energy stored on one of its plates. It is measured in coulombs (C).

2. How is the charge on a capacitor calculated?

The charge on a capacitor can be calculated using the formula Q = CV, where Q is the charge, C is the capacitance of the capacitor, and V is the voltage across the capacitor.

3. What happens to the charge on a capacitor when it is connected to a battery?

When a capacitor is connected to a battery, the charge on the capacitor increases until it reaches the same voltage as the battery. This is known as charging the capacitor.

4. Can a capacitor hold a constant charge?

No, a capacitor cannot hold a constant charge as it will eventually discharge due to leakage currents. However, the rate of discharge can be slowed down by using capacitors with higher dielectric strength and lower leakage currents.

5. How does the charge on a capacitor affect its capacitance?

The capacitance of a capacitor is directly proportional to the charge stored on its plates. This means that as the charge increases, the capacitance also increases. However, the capacitance of a capacitor is also affected by other factors such as the distance between the plates and the material of the dielectric.

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