Capacitance, charge, area related physics questions
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1) A capacitor has a charge of 0.002C when it is connected across a 100V battery, Find its capacitance.
2) A capacitor has a capacitance of 6.40uF. How much charge must be removed to lower the potential difference of its plate by 50.0V?
3) The plates of a parallel-plate capacitor have areas of 40cm2 and are separated by 0.2mm of waxed paper (K=2.2). Find its capacitance.
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Solution Summary
Three questions are answered in this posting.
1) A capacitor has a charge of 0.002C when it is connected across a 100V battery, Find its capacitance.
2) A capacitor has a capacitance of 6.40uF. How much charge must be removed to lower the potential difference of its plate by 50.0V?
3) The plates of a parallel-plate capacitor have areas of 40cm2 and are separated by 0.2mm of waxed paper (K=2.2). Find its capacitance.
Detail solutions are worked out with equations given.
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Capacitance
1. A capacitor has a charge of 0.002C when it is connected across a 100V battery, Find its capacitance.
Answer: 20uF
Solution:
You can use the equation:
C=Q/V
Where C is the capacitance in F, Q is the charge in C, V is the voltage in V.
C=Q/V
=0.002C/100V
=2×〖10〗^(-5) F
=20μF
2. A capacitor has a capacitance of 6.40uF. How much charge must be removed to lower the ...
Purchase this Solution
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