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A current of 7.5 A is maintained in a wire for 45 s. In this time ( a) how much charge and ( b) how many electrons flow through the wire ?
10
Nov
A current of 7.5 A is maintained in a wire for 45 s. In this time ( a) how much charge and ( b) how many electrons flow through the wire ? A current of 7.5 A is maintained in a wire for 45 s. In this time ( a) how much charge and ( [...]
A parallel plate capacitor having plates of area S and plate separation d, has capacitance C1 in air. When two dielectrics of different relative primitivities (ε1=2 and ε2=4) are introduced between the two plates as shown in the figure, the capacitance becomes C2. The ratio C2/C1 is
10
Nov
A parallel plate capacitor having plates of area S and plate separation d, has capacitance C1 in air. When two dielectrics of different relative primitivities (ε1=2 and ε2=4) are introduced between the two plates as shown in the figure, the capacitance becomes C2. The ratio C2/C1 is A parallel plate capacitor having plates of area [...]
A 2 muF capacitir is cahrged as shown in the figure. The percentage of its stored energy dissipated after switch S is turned to position 2 is
10
Nov
A 2 muF capacitir is cahrged as shown in the figure. The percentage of its stored energy dissipated after switch S is turned to position 2 is A 2 muF capacitir is cahrged as shown in the figure. The percentage of its stored energy dissipated after switch S is turned to position 2 is November [...]
A parallel plate capacitor of capacitance 90 pF is connected to a battery of emf 20 V. If a dielectric material of dielectric constant K = 5/3 is inserted between the plates, the magnitude of the induced charge will be :
10
Nov
A parallel plate capacitor of capacitance 90 pF is connected to a battery of emf 20 V. If a dielectric material of dielectric constant K = 5/3 is inserted between the plates, the magnitude of the induced charge will be : A parallel plate capacitor of capacitance 90 pF is connected to a battery of [...]
A capacitance of 2μF is required in an electrical circuit across a potential difference of 1.0kV A large number of 1μF capacitors are available which can withstand a potential difference of not more than 300v. The minimum number of capacitors required to achieve this is
10
Nov
A capacitance of 2μF is required in an electrical circuit across a potential difference of 1.0kV A large number of 1μF capacitors are available which can withstand a potential difference of not more than 300v. The minimum number of capacitors required to achieve this is In the circuit shown in the figure. Calculate the charge [...]
In the given circuit, a charge of +80 muC is given to the upper plate of the 4 muF capacitor. THen in the steady state , the charge on the upper plate of the 3 muF capacitor is
10
Nov
In the given circuit, a charge of +80 muC is given to the upper plate of the 4 muF capacitor. THen in the steady state , the charge on the upper plate of the 3 muF capacitor is a charge of +80 muC is given to the upper plate of the 4 muF capacitor. THen [...]
A combination of capacitors is set up as shown in the figure. The magnitude of the electric field, due to a point charge Q (having a charge equal to the sum of the charges on the 4μF and 9μF capacitors), at a point distance 30 m from it, would equal:
10
Nov
A combination of capacitors is set up as shown in the figure. The magnitude of the electric field, due to a point charge Q (having a charge equal to the sum of the charges on the 4μF and 9μF capacitors), at a point distance 30 m from it, would equal: A combination of capacitors is [...]
In the circuit shown in the figure. Calculate the charge on 3 muF capacitor in steady state ( in muC ).
10
Nov
In the circuit shown in the figure. Calculate the charge on 3 muF capacitor in steady state ( in muC ). In the circuit shown in the figure. Calculate the charge on 3 muF capacitor in steady state ( in muC ). November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
In the givven circuit, charge Q2 on the 2μF capacitor changes as C is varied from 1μF to 3μF. Q2 as a function of ‘C’ is given properly by: (figures are drawn schematically and are not to scale)
10
Nov
In the givven circuit, charge Q2 on the 2μF capacitor changes as C is varied from 1μF to 3μF. Q2 as a function of ‘C’ is given properly by: (figures are drawn schematically and are not to scale) charge Q2 on the 2μF capacitor changes as C is varied from 1μF to 3μF. Q2 as [...]
A parallel plate capacitor is made of two circular plates separated by a distance 5 mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 × 10^4 V/m the charge density of the positive plate will be close to:
10
Nov
A parallel plate capacitor is made of two circular plates separated by a distance 5 mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 × 10^4 V/m the charge density of the positive plate will be close to: Find the ratio of the magnitudes [...]