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Chapter 8: Electrostatics

60 Questions 60 Minutes Pass: 60%
1 Coulomb’s law is only applicable for
2 The force exerted by two charged bodies on one another, obeys Coulomb’s law provided that
3 The constant K in Coulomb’s Law depends upon
4 A unit of electric charge is:
5 Presence of dielectric always:
6 The S.I unit of permittivity is:
7 The lines which provide information about the electric force exerted on charged particles are:
8 The electric field created by positive charge is:
9 The value of relative permittivity for all the dielectrics is always:
10 Photo-copier and inkjet printers are the applications of:
11 Selenium is a conductor material when exposed to ______
12 Selenium is an
13 In an inkjet printer, the charged ink drops are diverted by the deflection plates
14 The electric field produced due to negative charge is always:
15 The force experience by a unit positive charge placed at a point in an electric field is called:
16 Of the following quantities, the one that is vector in character is an
17 Electric field intensity is also known as
18 Potential gradient is defined as
19 The SI unit of E are:
20 The electric intensity is expressed in unit of N/C or
21 The unit Vm⁻¹ is equivalent to:
22 Electric flux is defined as:
23 When vector area is held perpendicular to the field lines, then the magnitude of electric flux is:
24 When vector area is held parallel to electric field lines, then the magnitude of electric flux is:
25 The SI unit of electric flux is:
26 The magnitude of the electric field inside oppositely charged plates, having uniform surface charge density σ, is:
27 The electric intensity near an infinite plate of positive charge will be:
28 If a charged body is moved against the electric field, it will gain:
29 One volt is
30 Absolute potential difference, due to point charge of 1C at a distance of 1m is given by:
31 A charge of 0.01 C accelerated through a p.d of 1000 V acquires K.E
32 1 joule = ______
33 One electron volt is equal to
34 How many electrons will have a charge of one coulomb?
35 Gravitational force between two objects does not depend on:
36 The charge on the electron was calculated by
37 The equation for the Stokes law is
38 The charge determined by the Millikan’s experiment is
39 Capacitors may be considered as a device for
40 The medium used between the plates of a capacitor is called
41 Capacity of a capacitor depends upon
42 Farad is defined as:
43 The capacitance of a parallel plate capacitor is given by:
44 The expression of energy stored in a capacitor is given by:
45 Unit of energy density of electric field is:
46 The term "RC" has same unit as that of:
47 The ratio of C_vac and C_med is equal to
48 During charging of a capacitor, the ratio of instantaneous charge and maximum charge on plates of capacitors at t = RC is
49 The electric potential energy per unit charge is called:
50 The work done to move a unit positive charge from infinity to a point in an electric field is called:
51 If the distance between two point charges is halved, the force between them becomes:
52 The dielectric constant of a metal is:
53 Electric field inside a charged conductor is:
54 The energy stored in a capacitor resides in its:
55 The time constant of an RC circuit is the time required to charge the capacitor to:
56 The capacitance of a capacitor increases with:
57 A 10 μF capacitor is charged to 100 V. The energy stored is:
58 The electric flux through a closed surface depends on:
59 If the charge on a capacitor is doubled, its capacitance:
60 The electric field inside a parallel plate capacitor with air as dielectric is E. If air is replaced by a dielectric of εᵣ=4, the new field becomes: