CAPACITANCE
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Electrostatic Potentials and Capacitance

268079 A radio capacitor of variable capacitance is made of \(\boldsymbol{n}\) parallel plates each of area \(\mathbf{A}\) and separated from each other by a distance d. The alternate plates are connected together. The capacitance of the combination is

1 \(\frac{n A \in_{0}}{d}\)
2 \(\frac{(n-1) A \in}{d}\)
3 \(\frac{(2 n-1) A \in_{o}}{d}\)
4 \(\frac{(n-2) A \in_{0}}{d}\)
Electrostatic Potentials and Capacitance

268080 The radius of the circular plates of a parallel plate condenser is '\(r\) '. Air is there as the dielectric. The distance between the plates if its capacitance is equal to that of an isolated sphere of radius \(r^{1}\) is

1 \(\frac{r^{2}}{4 r^{1}}\)
2 \(\frac{r^{2}}{r^{1}}\)
3 \(\frac{r}{r^{1}}\)
4 \(\frac{r^{2}}{4}\)
Electrostatic Potentials and Capacitance

268091 The charge stored in a capacitor is \(20 \mu \mathrm{C}\) and the potential difference across the plates is \(500 \mathrm{~V}\). Its capacity is

1 \(0.04 \mu F\)
2 \(10^{-2} \mu \mathrm{F}\)
3 \(2 \times 10^{-6} \mu F\)
4 \(250 \mu \mathrm{F}\)
Electrostatic Potentials and Capacitance

268092 An oil condenser has a capacity of \(100 \mu \mathrm{F}\). The oil has dielectric constant 2. When the oil leaks out its new capacity is

1 \(200 \mu \mathrm{F}\)
2 \(0.02 \mu \mathrm{F}\)
3 \(50 \mu \mathrm{F}\)
4 \(0.5 \mu \mathrm{F}\)
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Electrostatic Potentials and Capacitance

268079 A radio capacitor of variable capacitance is made of \(\boldsymbol{n}\) parallel plates each of area \(\mathbf{A}\) and separated from each other by a distance d. The alternate plates are connected together. The capacitance of the combination is

1 \(\frac{n A \in_{0}}{d}\)
2 \(\frac{(n-1) A \in}{d}\)
3 \(\frac{(2 n-1) A \in_{o}}{d}\)
4 \(\frac{(n-2) A \in_{0}}{d}\)
Electrostatic Potentials and Capacitance

268080 The radius of the circular plates of a parallel plate condenser is '\(r\) '. Air is there as the dielectric. The distance between the plates if its capacitance is equal to that of an isolated sphere of radius \(r^{1}\) is

1 \(\frac{r^{2}}{4 r^{1}}\)
2 \(\frac{r^{2}}{r^{1}}\)
3 \(\frac{r}{r^{1}}\)
4 \(\frac{r^{2}}{4}\)
Electrostatic Potentials and Capacitance

268091 The charge stored in a capacitor is \(20 \mu \mathrm{C}\) and the potential difference across the plates is \(500 \mathrm{~V}\). Its capacity is

1 \(0.04 \mu F\)
2 \(10^{-2} \mu \mathrm{F}\)
3 \(2 \times 10^{-6} \mu F\)
4 \(250 \mu \mathrm{F}\)
Electrostatic Potentials and Capacitance

268092 An oil condenser has a capacity of \(100 \mu \mathrm{F}\). The oil has dielectric constant 2. When the oil leaks out its new capacity is

1 \(200 \mu \mathrm{F}\)
2 \(0.02 \mu \mathrm{F}\)
3 \(50 \mu \mathrm{F}\)
4 \(0.5 \mu \mathrm{F}\)
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Electrostatic Potentials and Capacitance

268079 A radio capacitor of variable capacitance is made of \(\boldsymbol{n}\) parallel plates each of area \(\mathbf{A}\) and separated from each other by a distance d. The alternate plates are connected together. The capacitance of the combination is

1 \(\frac{n A \in_{0}}{d}\)
2 \(\frac{(n-1) A \in}{d}\)
3 \(\frac{(2 n-1) A \in_{o}}{d}\)
4 \(\frac{(n-2) A \in_{0}}{d}\)
Electrostatic Potentials and Capacitance

268080 The radius of the circular plates of a parallel plate condenser is '\(r\) '. Air is there as the dielectric. The distance between the plates if its capacitance is equal to that of an isolated sphere of radius \(r^{1}\) is

1 \(\frac{r^{2}}{4 r^{1}}\)
2 \(\frac{r^{2}}{r^{1}}\)
3 \(\frac{r}{r^{1}}\)
4 \(\frac{r^{2}}{4}\)
Electrostatic Potentials and Capacitance

268091 The charge stored in a capacitor is \(20 \mu \mathrm{C}\) and the potential difference across the plates is \(500 \mathrm{~V}\). Its capacity is

1 \(0.04 \mu F\)
2 \(10^{-2} \mu \mathrm{F}\)
3 \(2 \times 10^{-6} \mu F\)
4 \(250 \mu \mathrm{F}\)
Electrostatic Potentials and Capacitance

268092 An oil condenser has a capacity of \(100 \mu \mathrm{F}\). The oil has dielectric constant 2. When the oil leaks out its new capacity is

1 \(200 \mu \mathrm{F}\)
2 \(0.02 \mu \mathrm{F}\)
3 \(50 \mu \mathrm{F}\)
4 \(0.5 \mu \mathrm{F}\)
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Electrostatic Potentials and Capacitance

268079 A radio capacitor of variable capacitance is made of \(\boldsymbol{n}\) parallel plates each of area \(\mathbf{A}\) and separated from each other by a distance d. The alternate plates are connected together. The capacitance of the combination is

1 \(\frac{n A \in_{0}}{d}\)
2 \(\frac{(n-1) A \in}{d}\)
3 \(\frac{(2 n-1) A \in_{o}}{d}\)
4 \(\frac{(n-2) A \in_{0}}{d}\)
Electrostatic Potentials and Capacitance

268080 The radius of the circular plates of a parallel plate condenser is '\(r\) '. Air is there as the dielectric. The distance between the plates if its capacitance is equal to that of an isolated sphere of radius \(r^{1}\) is

1 \(\frac{r^{2}}{4 r^{1}}\)
2 \(\frac{r^{2}}{r^{1}}\)
3 \(\frac{r}{r^{1}}\)
4 \(\frac{r^{2}}{4}\)
Electrostatic Potentials and Capacitance

268091 The charge stored in a capacitor is \(20 \mu \mathrm{C}\) and the potential difference across the plates is \(500 \mathrm{~V}\). Its capacity is

1 \(0.04 \mu F\)
2 \(10^{-2} \mu \mathrm{F}\)
3 \(2 \times 10^{-6} \mu F\)
4 \(250 \mu \mathrm{F}\)
Electrostatic Potentials and Capacitance

268092 An oil condenser has a capacity of \(100 \mu \mathrm{F}\). The oil has dielectric constant 2. When the oil leaks out its new capacity is

1 \(200 \mu \mathrm{F}\)
2 \(0.02 \mu \mathrm{F}\)
3 \(50 \mu \mathrm{F}\)
4 \(0.5 \mu \mathrm{F}\)
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