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What is the electric field in between th...

What is the electric field in between the plates of a capacitor in the presence of adielectric medium?

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a. A closed loop is held stationary int eh magnetic field between the north and south poles of two permanent magnets held fixed. Can we hope to generate current in the loop by using very strong magnets? b. A closed loop move normal to the constant electric field between the plates of a large capacitor. Is a current induced in the loop (i) when it is wholly inside the region between the capacitor plates (ii) when it is partially outside the plates of the capacitor? The electric field is normal to the plane of the loop. c. A rectangular loop and a circular loop are moving out of a uniform magnetic field (region). (see fig.) to field-free region with a constant velocity v. In which loop do you expect the induced emf to be constant during the passage out of the field region? The field is normal to the loops. d. Predict the polarity of the capacitor in the situation described by the figure below.

A dielectric slab is inserted between the plates of a capacitor. The charge on the capacitor is Q and the magnitude of the induced charge on each surface of the dielectric is Q' .

Two parallel plate capacitors, each of capacitance 40 muF , are connected is series. The space between the plates of one capacitor is filled with a dielectric material of dielectric constant K =4. Find the equivalent capacitacne of the system.

Two large conducting plates X and Y. each having large surface area A (on one side), are placed parallel to each other as shown in figure (30-E7). The plate X is given a charge Q whereas the other is neutral. Find (a) the surface charge density at the inner surface of the plates X, (b) the electric field at a point to the left of the plates, (c) the electric field at a point in between the plates and (d) the electric field at a point to the right of the plates.

The capacitance of a parallel plate capacitor increases from 5 mu F "to" 60 mu F when a dielectric is filled between the plates. The dielectric constant of the dielectric is :

Choose the correct statements from the following for the given situation. The dielectric can be inserted into the plates of a capacitor when (i) The capacitor is connected to the battery (ii) the capacitor is disconnected from the battery (iii) the capacitor is discharging and plates are removed (iv) the capacitor is charging without the plates

NEW JOYTHI PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Evaluation Questions And Answers
  1. What is the work done in increasing the charge from Q(1)" to "Q(1) +de...

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  2. In which form and where is the energy of the capacitor stored?

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  3. What is the electric field in between the plates of a capacitor in the...

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  4. A capacitor of capacitance C is connected to a voltage source of p.d. ...

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  5. What happens when a non polar molecule is placed in an external electr...

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  6. What is the difference between a hydrogen molecule and HCI molecule?

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  7. If the positive centre of charge coincides with negative centre of cha...

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  8. Classify the following molecules into Polar and non-polar. (H2O, H2, N...

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  9. What is the electric field in between the plates of the capacitor, if ...

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  10. A conducting spherical shell of radius R has a charge Q. A small spher...

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  11. Two copper spheres of radii, one hollow and the other solid are charge...

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  12. Two capacitors when connected in series the effective capacity is 2muF...

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  13. What is the capacity having a plate area A of the figure given below?

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  14. Keeping the voltage of the charging source constant, what would be the...

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  15. Four point charges are placed at the four corners of a square in the t...

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  16. How much work is done in moving a 500 muC charge between two points on...

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  17. Two dielectric slabs of dielectric constants K(1) and K(2) are filled ...

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  18. An infinite number of charges, each of charge q, are located along the...

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  19. Derive an expression for field intensity due to a uniformly charged ri...

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  20. Two parallel plate capacitors X and Y have the same area of plates and...

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