Home
Class 12
PHYSICS
The two metals objects in Fig 25-44 have...

The two metals objects in Fig 25-44 have net charges of +70pC and -70pC which result in a 35V potential difference between them (a) What is the capacitance of the system? (b) If the charges are changed to +200pC and -200pC, what does the capacitance become ? (c) what does the potential difference become?

Text Solution

Verified by Experts

`a) 2.0 pF b) 2.0 pF c)1.0 times 10^2 V`
Promotional Banner

Topper's Solved these Questions

  • CAPACITANCE

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (SINGLE CORRECT CHOICE TYPE)|23 Videos

  • CAPACITANCE

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (MORE THAN ONE CORRECT CHOICE TYPE)|12 Videos

  • CAPACITANCE

    RESNICK AND HALLIDAY|Exercise CHECKPOINTS|4 Videos

  • ALL ABOUT ATOMS

    RESNICK AND HALLIDAY|Exercise CHECKPOINT|1 Videos

  • CENTER OF MASS

    RESNICK AND HALLIDAY|Exercise Practice Questions (Integer )|4 Videos

Similar Questions

Explore conceptually related problems

Two metallic conducors have net charge of +70 pC and -70 pC , which result in a potential difference of 20 V between them. What is the capacitanace of the system ?

5 J of work is done in moving a positive charge of 0.5C between two points. What is the potential difference between these points ?

Find the potential difference between points A and B of the system shown in Fig. if the emf is equal to E = 100V and the capacitance ratio C_(2)//C_(1) = eta = 2.0 .

The work done in moving a charge of 3 C between two points is 6J. What is the potential difference between the two points?

If 10 J of work is to be done in moving a charge of -200C from A to B, which of the two points is at higher potential ? What is the potential difference ?

Does the capacitance C of a capacitor increase , decrease or remain the same (a) when the charge q on it is doubled and (b) when the potential difference V across it is tripled?

A is 75% less than B and C is 75% of the difference between A and B. C is what percentage more than A?

A capacitor of capacitance 500muF is charged at the rate of 100muC//s . The time in which the potential difference will become 20V, is :

A is 40% less than B, and C is 40% of the sum of A and B. The difference between A and B is what percentage of C?

A capacitor having a capacitance of 100 mu f is changed to a potential difference of 50V. (a) What is the magnitude of the charge on each plate? (b)The charging battery is disconnected and a dielectric of dielectric constant 2.5 is inserted . Calculate the new potential difference between the plate .(c) What charge would have producted this potential difference in absence of the dielectric slab.(d) Find the charge induced at a surface of the dielectric slab.

RESNICK AND HALLIDAY-CAPACITANCE-PROBLEMS
  1. Two parallel plate capacitors 8.0 mu F each , are connected in paralle...

    Text Solution

    |

  2. In figure the battery has a potential difference of 20 V. Find (a...

    Text Solution

    |

  3. A certan substance has a dielectric constant of 5.6 and a dielectric s...

    Text Solution

    |

  4. For the arrangement of Fig 25-22 suppose, that the battery remains con...

    Text Solution

    |

  5. In fig 25-39 the capacitances are C1=1.0 mu F and C2=3.0 mu F and both...

    Text Solution

    |

  6. Capacitor 3 in Fig. 25-40a is a variable capacitor (its capacitance C3...

    Text Solution

    |

  7. Figure 25-41 shows a circuit section of four air filled capacitors tha...

    Text Solution

    |

  8. A charged isolated metal sphere of diameter 15cm has a potential of 65...

    Text Solution

    |

  9. Two parallel plates of area 100 cm^2 are given charges of equal magnit...

    Text Solution

    |

  10. What is the capacitance of a drop that results when two mercury sphere...

    Text Solution

    |

  11. Plot 1 in fig25-42a gives the charge q that can be stored on capacitor...

    Text Solution

    |

  12. Figure 25-43 shows a 24.0 V battery and four uncharged capacitors of c...

    Text Solution

    |

  13. How many 12.5 mu F capacitors must be connected in parallel to store a...

    Text Solution

    |

  14. The space between two concentric conducting spherical shells of radii ...

    Text Solution

    |

  15. You have two flat metal plates, each of area 1.00 m^2 with which to co...

    Text Solution

    |

  16. The two metals objects in Fig 25-44 have net charges of +70pC and -70p...

    Text Solution

    |

  17. In fig.25-45 V=12V C1=10 mu F and C2=C3=20 mu F Switch S in first thro...

    Text Solution

    |

  18. A 100pF capacitor is charged to a potential difference of 80.0V and th...

    Text Solution

    |

  19. The plates of a spherical capacitor havi radii 37.0mm and 40.00 mm (a)...

    Text Solution

    |

  20. In fig.25-46 two parallel plate capacitors (with air between the plate...

    Text Solution

    |