1.
The loosely bound electrons in
an atom are considered as ______________electrons.
2.
Loosely bound electrons can
move throughout the conductor hence they are _________________________.
3.
The amount of charge flowing
through a particular cross-sectional area in unit time is ____________________.
4.
A continuous path consisting of
______________________ and other resistances between the terminals of the
battery, along which an electric current flows is called as circuit.
5.
A circuit which indicates how
different components in a circuit have been connected by using the
__________________________ for components is called as circuit diagram.
6.
The conventional direction of
current is from ___________terminal to ___________terminal of cell.
7.
Electric bulb is used to check
the _____________________.
8.
Electric circuits are
represented by drawing ________________________________.
9.
An electric cell is used to
provide ___________________________in a circuit.
10.
The combination of cells is
called as ______________________.
11.
Plug key is also called as
____________________.
12.
–( )− symbol is used to keep the circuit
____________.
13.
The electrons flow from
_____________terminal to _______________terminal of cell.
14.
If 1 coulomb of charge passing
through any _________________of conductor in 1 second then amount of current
flowing through it is 1 ampere.
15.
10-6 A = _______.
16.
1mA = ________milli ampere.
17.
If Q be net charge flowing through any
cross-section of conductor in time t, then current I is given by _______.
18.
The SI unit of charge is
______________.
19.
The charge on an electron is
_______________.
20.
1A = _______ /_______.
21.
If metal wire is not connected to any cell then
electrons present in it move _______________ in all directions.
22.
The flow of electrons in metal
wire constitutes the ____________________________in the wire.
23.
When battery is connected
across ends of metal wire, then _________________ acts on free electrons in
wire.
24.
The electrons in the conductor
move with a certain average ______________________.
25.
A ______________ is used to
provide large potential difference in a circuit.
26.
1V = _____ /_______
27.
The P.D. between the 2 points
in an electric field is defined as amount of work done in moving a
_________positive charge from one point to another.
28.
The P.D. between 2 points is
said to be 1V if one joule of work is done in moving ______________of electric
charge from one point to another.
29.
1MV = ___________V
30.
1000V = ________kV
31.
=
,then β =_________
32.
________________________________
is the electric level at a particular point.
33.
If the copper wire is coiled in
the form of loop and if ends of the loop is connected to battery then battery
imposes a _______________________________ between the end of a loop and current
sets up in a loop.
34.
If two conductors A and B are
at high and low potentials respectively, and if B and A are joined by a wire
then current will flow from ________to _________,till the potentials of A and B
become same.
35.
Lightning is electric discharge
travelling from clouds at high potential to earth surface at ________potential.
36.
A resistor is used to control
the _____________.
37.
Variable resistance is also
called as _______________.
38.
Variable resistance is used to
change the ____________in the circuit.
39.
_______________is used to
measure electric current in the circuit.
40.
___________________is used to
measure PD across the device.
41.
The electric current flowing in
a metallic conductor is directly proportional to potential difference across
its terminals, provided _________________________________of conductor remains
constant.
42.
If 1 ampere current flows through
________________and 1 volt potential difference is applied across it, then its
resistance is 1 ohm.
43.
Specific resistance is also
called as __________________.
44.
______ =
45.
The property of conductor due
to which it ______________ the flow of current is called as resistance.
46.
When electrons move from one
part to other part of the conductor, they ___________with other electrons and
also with atoms and ions present in conductor.
47.
__________________is
numerically equal to ratio of potential difference across ends of conductor to
current flowing through it.
48.
The substances which have
_________________high electrical resistance are called as insulators.
49.
The substances which have very __________electrical
resistance are called as conductors.
50.
The unit of specific resistance
is ________.
51.
The specific resistance of
conductor is defined as ________________of conductor of unit length and unit
area of cross section.
52.
The alloy of Cu and Ni is
called as _________________,
53.
The alloy of Cu, Ni and Mn is
called as ________________.
54.
Constantan is an alloy of
__________and ___________.
55.
In _____________combination, PD
across each resistance is same.
56.
In ____________combination,
same current flows through each resistance.
57.
The series combination is used
to ______________ resistance in a circuit.
58.
The effective resistance
of parallel combination is ________than
individual resistance in combination.
59.
In series circuit, the
__________ is same in every part of circuit.
60.
If resistors are connected in
parallel then the sum of _______________________ of the individual resistance
is equal to reciprocal of equivalent resistance.
61.
In series combination, total
voltage across the combination is equal to sum of ____________________across
the separate resistors.
62.
In parallel combination, total
current is the sum of currents flowing in the ____________________branches.
63.
When moving free electrons in
metal collide with atoms of metal, a
part of ________________________is converted into heat, at each collision.
64.
The production of
_________________________ in conductor by electric current flowing through it
is called as heating effect of electric current.
65.
The quantity of heat generated
in a conductor of resistance R when a current I flows through it for time
t is directly proportional to :A)
___________of current, B) ________________of conductor, C)_________for which
the current flows.
66.
1J = _____________cal.
67.
H =
cal
68.
H =
cal
69.
The melting point of tungsten
is _______ᵒC.
70.
An electric iron consists of a
coil of high resistance covered by __________sheets and kept inside a heavy metal block.
71.
Mica is ___________conductor of
heat.
72.
Mica is __________conductor of
electricity.
73.
In parallel combination,
current in various resistors are _____________proportional to resistances.
74.
In surgery, a fine heated
_____________ wire is used for cutting tissues, much more better than knife.
75.
The parallel combination is
used to _________________resistance in the circuit.
76.
The effective resistance in a
_____________combination is greater than individual resistances.
77.
_________used in electric
circuit protect circuits and appliances by stopping the flow of any excess
electric current.
78.
Electric power is the
________________________done per unit time.
79.
_____________________ is
defined as rate at which electrical energy is consumed.
80.
If one joule of work is done
per second then the electric power is ____________.
81.
________________is unit of
power used for commercial purpose.
82.
W = ____________ joules.
83.
Power =
84.
P = ____ / R
85.
I2___ = P
86.
The commercial unit of electric
energy is _______________________________.
87.
The commercial unit of energy
is commonly known as _____________.
88.
1 second = _____________hour.
89.
1 kWh = _____________joule
90.
Work = _______________________
X charge
91.
Electric charge =
_______________ X time
92.
The electric potential released
in the process of lightning process as great as ________ volt.
93.
Resistivity is characteristic
property of ______________.
94.
Resistivity is _______________ for different materials.
95.
The alloy of Ni, Mn, Fe and Cr
is called as ____________________.
96.
The fuse is placed in
_____________ with the device or appliances.
97.
Fuse consists of wire made of
an alloy of low _____________________.
98.
If a current larger than the specified value
flows through the circuit, the temperature of fuse wire _____________________.
99.
The fuse wire is usually
enclosed in a ___________________ of porcelain.
100.
The fuses used for
_______________ purposes are stated as 1A,2A,3A,4A,5A,10A,etc.
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