Question
A conductor carries a certain charge. When it is connected to another uncharged conductor of finite capacity, then the energy of the combined system is.

Answer

  1. Less than that of the first conductor.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

What is the stopping potential when the metal with work function 0.6 eV is illuminated with the light of 2 eV (a) 2.6 V(b) 3.6 V (c) 0.8 V   (d) 1.4 V
       
Two condensers of capacities 1μF  and 2 μF  are connected in series and the system is charged to 120 volts. Then the P.D. on 1 μF  capacitor (in volts) will be (a) 40  (b) 60(c) 80 (d) 120
       
The sensitivity of a potentiometer can be increased by:
  • increasing the series resistance in the primary circuit.
  • decreasing the length of the potentiometer wire.
  • using a thin and high resistivity wire as a potentiometer wire.
  • increasing the length of the wire.
A proton and an electron enter a region with equal speed in which a magnetic field is suddenly switched on. The force experienced by them are:
If a convex lens of focal  length 80 cm and a concave lens of focal length 50 cm are combined together, what will be their resulting power(a) + 6.5D(b) – 6.5 D(c) + 7.5 D(d) – 0.75 D
       
A piece of charcoal and a piece of shining steel of the same surface area are kept for a long time in an open lawn in bright sun:
  1. The steel will absorb more heat than the charcoal.
  2. The temperature of the steel will be higher than that of the charcoal.
  3. If both are picked up by bare hands, the steel will be felt hotter than the charcoal.
  4. If the two are picked up from the lawn and kept in a cold chamber, the charcoal will lose heat at a faster rate than the steel.
The adjoining figure shows a negatively charged electroscope. If a negatively charged rod is brought close to, but not touching, the knob, the two leaves will:
A capacitor of $10\mu F$ charged up to $250$ volts is connected in parallel with another capacitor of $5\mu F$ charged up to $100$ volts. The common potential is
A parallel plate capacitor of capacity $C _0$ is charged to a potential $V _0$
$(i)$ The energy stored in the capacitor when the battery is disconnected and the separation is doubled $E _1$
$(ii)$ The energy stored in the capacitor when the charging battery is kept connected and the separation between the capacitor plates is doubled is $E _2$ Then $E _1 / E _2$ value is
If $q$ is the charge per unit area on the surface of a conductor, then the electric field intensity at a point on the surface is