Related InterviewSolutions

• n small drops of the same size of the same size are charged to V volt each. They coalesce to form a big drop. The potential of the big drop will beA. `n^(1/3)V`B. `n^(2/3)V`C. `n^(3/2)V`D. `n^(3)V`
• When two charged conductors are joined by a thin conducting wire, charge flows from one to the orhter, untilA. Charges on them become equalB. their capacitances become equalC. their potentials become equalD. energy stored in them becomes equal
• A few capacitors are equally charged. Which of the figures shows the nature of variation of the potential difference V between their plates with their capacitances C?A. B. C. D.
• Two conducting spheres of radii `r_1" and "r_2` are connected by a thin conducting wire.Some amount of charges is given to the system. The charge will be shared between them in such a way that the ratio between the surface densities of charge on the spheres is equal toA. `(r_1)/(r_2)`B. `(r_2)/(r_1)`C. `(r_1^2)/(r_2^2)`D. `(r_2^2)/(r_1^2)`
• When a capacitor is connected to a dc battery,A. no current flows through the circuitB. current flows through the circuit for sometime, but eventually stopsC. current grows up and reaches a maximum value when the capacitor is fully chargedD. current reverses its direction alternately due to charging and discharging of the capacitor
• Two capacitors of capacitance `C_1" and "C_2` are connected in parallel. If a charge q is given to the assembly, the charge gets shared. The ratio of the charge on the capacitor `C_1` to the charge on `C_2` isA. `(C_1)/(C_2)`B. `(C_2)/(C_1)`C. `C_1C_2`D. `(1)/(C_1C_2)`
• A capacitor of capacitance `C_1` is charged up to potential V and then connected in parallel to an uncharged capacitor or capacitance `C_2`. The final potential difference across each capacitor will beA. `(C_2V)/(C_1+C_2)`B. `(C_1V)/(C_1+C_2)`C. `(1+(C_2)/(C_1))V`D. `(1-(C_2)/(C_1))V`
• A capacitor `C_1` of capacitance `5muF` is charged to a potetntial of 100V and another capacitor `C_2` of capacitance `8muF` is charged to 50V. The positive and negative plates are mutually connected. Amount of charge of the capacitor `C_2` after combination will beA. `4500muC`B. `7200muC`C. `(4500)/(13)muC`D. `(7200)/(13) muC`
• A capacitor `C_1` of capacitance `5muF` is charged to a potetntial of 100V and another capacitor `C_2` of capacitance `8muF` is charged to 50V. The positive and negative plates are mutually connected. Amount of charge of the capacitor `C_1` after combination will beA. `(4500)/(13) muC`B. `(7200)/(13) muC`C. `(2700)/(13) muC`D. `(11700)/(3) muC`
• A capacitor `C_1` of capacitance `5muF` is charged to a potetntial of 100V and another capacitor `C_2` of capacitance `8muF` is charged to 50V. The positive and negative plates are mutually connected. The final potential of the combination of the two capacitance will beA. `(500)/(3)V`B. `(900)/(13)V`C. `150 V`D. `50 V`