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WorksheetsElectricity Starter
Total questions: 12
Worksheet time: 5mins
Ohm's Law states that the _______________, across the ends of a given metallic wire, is directly proportional to the ________________ through it, provided its _____________ remains the same
Potential Difference [I]; charge; length
Potential Difference [R]; energy; area of cross-section
Potential Difference [V]; current; temperature
Potential Difference [P]; electrons; material
Which of the following affect resistance?
Length
Area of cross-section
Material
Voltage supplied
Current flowing through the wire
When current increases, the resistance _____________ and when the current decreases, the resistance _____________
(Write your answer like this: abcd, efgh
(a)
Which formula represents Ohm's law?
V=IR
R=IV
I=RV
What is the unit for resistance?
Volts
Amperes
Ohms
Watts
What would the resistance be if a 7.5 Ampere current is passed through a circuit having total resistance of 15 Ω
[ Don't write the unit ]
(a)
The best conductor is (a)
Metals are used for heating elements, such as toasters and room heaters
True
False
Which of the following is used to make the filament of incandescent light bulbs?
Copper
Aluminum
Tungsten
Silver
Gold
SI unit of resistivity
[Write the unit in all caps and in singular form]
(a)
Which of the following are alloys?
Nichrome
Copper
Manganin
Constantan
Aluminum
