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WorksheetsQuiz ( 3 ) Ch. ( 1 )
Total questions: 12
Worksheet time: 3600secs
1 Ampere means that …………..electrons pass in certain cross section every 1 sec.
1.6 × 10-19
6. 25 × 1018
6. 25 × 10-19
1.6 × 1018
1.6 × 10-21
A potential difference of 12 V is required to move 6.25 x 1018 electrons between the ends of a resistor within 2 seconds, then the value of the resistor is………………
12 Ω
6 Ω
3.84 Ω
24 Ω
18 Ω
If the length of a conductor is doubled and its radius is halved, so its conductivity will be …………
increased to double
increased four times
increased eight times
decreased to half
remained as it is
Suppose the electric company charges 10 Cents per
KW.h, how much does it cost to use a 125 W lamp 4 hours a day for month?
1.20 $
1.50 $
1.80 $
1.70 $
7.20 $
The equivalent unit to Volt.Coulomb/s is ……………….
Joule
Ohm
Volt
Watt
Ampere
An electric lamp is marked by 100 Watt, so it is supposed that its resistance to be ………when the voltmeter reads 10 volt around its terminal.
1 Ω
10 Ω
0.01 Ω
100 Ω
0.1 Ω
A certain resistor dissipated 0.5 W when connected to a 3Volt potential difference. When connected to
1 Volt potential difference, this resistor will dissipate ……
0.5 W
0.167 W
1.5 W
0.056 W
1.05 W
If we have a wire of resistance ( R ), and a second wire of length equals half the length of the first but its diameter equals the radius of the first and the resistivity of its material equals 4/3 the resistivity of the material of the first, then the resistance of the second wire equals………
8R/3
3R/8
4R/3
3R/4
5R/4
If a conductor is cut to half its length and its radius increases to double, so the resistance of wire will be ….
decreased to 1/2 of its value
decreased to 1/4 of its value
decreased to 1/6 of its value
decreased to 1/8 of its value
remain constant
Two wires of the same resistance but made of different materials, the length of the first is three times that of the second and radius of the first is one third of the second wire. Calculate the ratio between their resistivities of the two wires.
1/27
1/6
1/9
1/3
1/12
The product of Ampere and Ohm gives a quantity of …………
electric power
energy consumed
potential difference
electric charge
time in second
If Watt = Watt . Sec . Ampere / X , so the value of ( X ) represent a ……………
Resistance
Potential difference
Energy consumed
Quantity of charge
Current intensity
