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WorksheetsScience - Electricity
Total questions: 10
Worksheet time: 5mins
The least resistance obtained by using 2 Ω, 4 Ω, 1 Ω and 100 Ω is
< 100 Ω
< 4 Ω
< 1 Ω
> 2 Ω
Work of 14 J is done to move 2 C charge between two points on a conducting wire. What is the potential difference between the two points?
28 V
14 V
7 V
3.5 V
A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of
more length
less radius
less length
more radius
A circuit has a charge of 2C moving through it in 3 s. Which electrical component in the circuit, if present, will show the current?
Voltmeter will show a current of 6 A
Ammeter will show a current of 0.7 A.
Rheostat will show a current of 0.7 A.
Resistor will show a current of 0.35 A.
Electrical resistivity of a given metallic wire depends upon
its length
its thickness
its thickness
nature of the material
Two devices are connected between two points, say A and B in parallel. The physical quantity that will remain the same between the two points is
current
voltage
resistance
None of these
Unit of electric power may also be expressed as
volt ampere
kilowatt hour
watt second
joule second
What is the relationship between resistance and current?
They are directly related to each other.
They are inversely related to each other.
The resistance has a greater magnitude than current.
The current has a greater magnitude than resistance.
A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly
1020
1016
1018
1023
How much more heat is produced, if the current is doubled?
twice the original amount
thrice the original amount
four times the original amount
five times the original amount
