Question
Two identical capacitors have the same capacitance C. One of them is charged to potential and the other to . The negative ends of the capacitors are connected together. When the positive ends are also connected, the decrease in energy of the system is
The correct answer is:
Related Questions to study
A capacitor of capacitance charged to a potential and then isolated. A small capacitor C is then charged from , discharged and charged again; the process being repeated n times. Due to this, potential of the larger capacitor us decreased to V . The value of C is
A capacitor of capacitance charged to a potential and then isolated. A small capacitor C is then charged from , discharged and charged again; the process being repeated n times. Due to this, potential of the larger capacitor us decreased to V . The value of C is
Nitric oxide is prepared by the action of on
Nitric oxide is prepared by the action of on
For chrome plating the electrolytic bath contains:
For chrome plating the electrolytic bath contains:
The metal which does not form ammonium nitrate by reaction with dilute nitric acid is
The metal which does not form ammonium nitrate by reaction with dilute nitric acid is
When conc. is distilled with , the product formed is:
When conc. is distilled with , the product formed is:
Ammonia reacts with excess of chlorine to form:
Ammonia reacts with excess of chlorine to form:
The last orbit of argon would have electrons
The last orbit of argon would have electrons
Oxide of nitrogen used as catalyst in lead chamber process for the manufacture of is:
Oxide of nitrogen used as catalyst in lead chamber process for the manufacture of is:
Reaction of PCl3 and PhMgBr would give
Reaction of PCl3 and PhMgBr would give
….. liberates oxygen from water.
….. liberates oxygen from water.
In case of nitrogen, is possible but not while in case of phosphorus, as well as are possible. It is due to
In case of nitrogen, is possible but not while in case of phosphorus, as well as are possible. It is due to
A hollow charged metal sphere has radius r . If the potential difference between its surface and a point at a distance 3r from the centre is V, then electric field intensity at a distance 3r is
A hollow charged metal sphere has radius r . If the potential difference between its surface and a point at a distance 3r from the centre is V, then electric field intensity at a distance 3r is
Two spheres of radii and joined by a fine wire are raised to a potential V. Let the surface charge densities at these two spheres be and respectively. Then the ratio has a value
Two spheres of radii and joined by a fine wire are raised to a potential V. Let the surface charge densities at these two spheres be and respectively. Then the ratio has a value
A large insulated sphere of radius r charged with Q units of electricity is placed in contact with a small insulated uncharged sphere of radius r and in then separated. The charge on smaller sphere will now be
A large insulated sphere of radius r charged with Q units of electricity is placed in contact with a small insulated uncharged sphere of radius r and in then separated. The charge on smaller sphere will now be
The magnitude of electric field in the annual region of a charged cylindrical capacitor
The magnitude of electric field in the annual region of a charged cylindrical capacitor