Download App

Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectrostatic Potential and Capacitance1 Mark
MCQ
What is the net electrostatic field in the interior of a conductor?
  • A
    Positive
  • B
    Negative
  • C
    Zero
  • D
    Depends on the nature of the conductor
✓

Answer

  1. Zero

Explanation:

Net electrostatic field is zero in the interior of a conductor. When a conductor is placed in an electric field, its free electrons begin to move in the opposite direction. Negative charges are induced on the left end and positive charges on the right end of the conductor. The process continues until the electric field set up by induced charges becomes equal and opposite the external field.

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

Explore more

More "M.C.Q [1M]" from Electrostatic Potential and Capacitance→Electrostatic Potential and Capacitance — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

A closed vessel is half filled with water. There is a hole near the top of the vessel and air is pumped out from this hole.
  1. The water level will rise up in the vessel.
  2. The pressure at the surface of the water will decrease.
  3. The force by the water on the bottom of the vessel will decrease.
  4. The density of the liquid will decrease.
→

Which of the following isotopes is used for the treatment of cancer

(a)  

(b)  

(c)    

(d)  
→
Which of the following component is connected in parallel in the circuit?

→
Which of the following is a wrong description of binding energy of a nucleus?
  1. It is the energy required to break a nucleus into its constituent nucleons.
  2. It is the energy made available when free nucleons combine to form a nucleus.
  3. It is the sum of the rest mass energies of its nucleons minus the rest mass energy of the nucleus.
  4. It is the sum of the kinetic energy of all the nucleons in the nucleus.
→
Given above are four logic gate symbols. Those for OR, NOR and NAND are respectively:

→

The formula for induced e.m.f. in a coil due to change in magnetic flux through the coil is (here A = area of the coil, B = magnetic field)

(a) e = - A.

(b) e = -B.

(c) e = -

(d) e = -)
→

The photoelectric threshold wavelength for a metal surface is 6600 Å. The work function for this is

(a) 1.87 V

(b) 1.87 eV

(c) 18.7 eV

(d) 0.18 eV

→
If a comb is rubbed on dry hairs, and then brought near paper pieces, it:
→

Which of the following statement is true about magnetic moments of atoms of different elements

(a) All have a magnetic moment

(b) None has a magnetic moment

(c) All acquire a magnetic moment under external magnetic field and in same direction as the field

(d) None of the above statements are accurate
→
A conducting resistor is joined with a battery. If the temperature of the conductor is changed with the cooling process, then the magnitude of current flowing:
→