Model one 1311/30
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‫‏ ‏‬
Chapter one
1) Which two resistor combination have the same resistance between (X )and( Y)
a) A and b
R
R
R
X
Y
X
Y
b) B and c
R
X
Y
X
Y
R
R
X
X
c) C and d
d
d) No correct answer
c
a
b
4
4Ω
4
122
12Ω
2) If the reading of the voltmeter in the circuit shown in the figure is2V then the
emf of the electric cell equal ......V
a) 15
4Ω
4Ω
b) 20
4
4
c) 10
V
6Ω
4Ω
d) 25
4
3) In the opposite circuit
If the reading of voltmeter is 8V then the internal resistance of the dry cell is....
a) 1
V
b) 2
c) 3
6
4Ω
d) 3
2Ω
r
36V
26V
4) In the opposite network . the value of I1 ,I2 are respectively..........
a) 3A ‫‏‬, 2A
4A
b) 2A‫‏‬,- 2A
5A
c) -3A‫‏‬, -2A
3A
d) 3A‫‏‬,‫ ‏‬3A
1A
5)In the opposite circuit the value of R equal ............Ω
a) 2
b) 4
2Ω
c) 0.5
4
3A
d) 1.5
2Ω
4
R
Ω
6Ω
4
I2
12Ω
Ω
0.5A
6)When the quantity of the electricity of 300C that passes through a
conductor in minute then a current intensity is................A
a- 5
b- 10
c- 3
d- 2
7) The opposite graph represents the relation between the quantity of the
electricity( Q) and the time ( t) then the value of X equal.................
Q
15
a) 3
b) 6
10
c) 5
t
2 X
d) 10
8)The opposite graph represents the relation between the resistance of a
conductor ( R) and the length of the conductor( L) then the ratio between
= ....................... at a constant the temperature
R
a)
10
b)
5
c)
L
d)
x y
9)In the opposite circuit the value of VB2=..........V
a) 9
12Ω
8Ω
b) 4.5
Ω
444
c) 12
VB2=4Ix
d) 10
VB1=6V
Ix
r=0
r=0
3Ω
444
4Ω
444
2Ω
444 r=2
4Ω
444
10)In the opposite circuit the reading of ammeter =........A
3Ω
a) 2
A
444
b) 3
c) 4
d) 1
VB=36V
11)When the work don transfer the quantity of the electricity of 3 C
which passes through the conductor is 60 J then the potential difference
between terminal of conductor is ..................
a- 180V
b- 180J
c- 20V
d- 20J
12)A wire of length 30 m and cross-section area 0.3 cm2 connected to a
DC source and ammeter of negligible resistance in the closed circuit . if
the electric current passing through the wire is 2 A and the potential
difference at its end 0.8V. then the conductivity of the wire is ..... Ω-1m-1
a) 25x1010
b) 25x105
c) 25x1020
d)
25x1015
13)Electric current of intensity 8mA passes in a thin wire and when
another wire of the same material and length is connected with it parallel
. the electric current increased to 10mA at the same potential difference .
then the ratio between the diameter of the two wires 1s...............
a)
b)
c)
d)
14) In the opposite circuit I3=2A then the value of I2 =…… A
c- 2
d- 5
8V
I1
4Ω
444
a- 1
b- 4
I3
8Ω
444
5Ω
444
I2
28V
15) two wire of the same material. The diameter of the first wire is 2 times the
diameter of the second wire . the resistance of the second wire is 4 times the
resistance of the first wire . so the length of the second wire ………..the length of
the first wire.
a)
b)
c)
d)
Prof / Gamel Diab
Physics instructor 01023251727