The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A is:
1. | independent of the distance between the plates. |
2. | linearly proportional to the distance between the plates. |
3. | proportional to the square root of the distance between the plates. |
4. | inversely proportional to the distance between the plates. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe diagrams below show regions of equipotentials.
A positive charge is moved from A to B in each diagram. Then:
1. | the maximum work is required to move q in figure(iii). |
2. | in all four cases,the work done is the same. |
3. | the minimum work is required to move q in the figure(i). |
4. | the maximum work is required to move q in figure(ii). |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system:-
1. Decreases by a factor of 2
2. Remains the same
3. Increases by a factor of 2
4. Increases by a factor of 4
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn electric dipole is place at an angle of with an electric field intensity 2 N/C. It experiences a torque equal to 4 Nm. The charge on the dipole, if the dipole length is 2 cm, is
(a) 8 mC (b) 2 mC
(c) 5 mC (d) 7 C
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA parallel-plate capacitor of area A, plate separation d, and capacitance C is filled with four dielectric materials having dielectric constants and as shown in the figure below. If a single dielectric material is to be used to have the same capacitance C in this capacitor, then its dielectric constant k is given by
(a)
(b)
(c)
(d)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA capacitor of 2 is charged as shown in the figure. When the switch S is turned to position 2, the percentage of its stored energy dissipated is:
1. 20%
2. 75%
3. 80%
4. 0%
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA capacitor of 2 µF is charged as shown in the figure. When the switch S is turned to position 2, the percentage of its stored energy dissipated is:
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology