The Resistance of a Given Wire Using Ohm's Law NEET Questions

Physics - Experimental Skills

The Resistance of a Given Wire Using Ohm's Law MCQ Questions


1.
Ohm's law states that:
A.
Resistance is proportional to current
B.
The current is inversely proportional to the potential difference
C.
Voltage is proportional to power
D.
The current through a conductor is directly proportional to the potential difference across its ends, provided physical conditions remain constant
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ANSWER :
D. The current through a conductor is directly proportional to the potential difference across its ends, provided physical conditions remain constant
2.
Mathematically, Ohm's law can be written as:
A.
V = R/I
B.
V = I + R
C.
V = IR
D.
V = I/R
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ANSWER :
C. V = IR
3.
Who discovered Ohm's law?
A.
Michael Faraday
B.
Alessandro Volta
C.
Benjamin Franklin
D.
Georg Simon Ohm
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ANSWER :
D. Georg Simon Ohm
4.
The SI unit of electrical resistance is:
A.
Volt (V)
B.
Ampere (A)
C.
Ohm (Ω)
D.
Watt (W)
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ANSWER :
C. Ohm (Ω)
5.
One ohm is defined as:
A.
The resistance of 1 metre of copper wire
B.
The resistance per unit length
C.
The resistance of any conductor at room temperature
D.
The resistance of a conductor that allows a current of 1 ampere when a potential difference of 1 volt is applied across it
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ANSWER :
D. The resistance of a conductor that allows a current of 1 ampere when a potential difference of 1 volt is applied across it
6.
In a V-I graph for an ohmic conductor (V on y-axis, I on x-axis), the slope gives:
A.
Conductance
B.
Current density
C.
Resistivity
D.
Resistance R
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ANSWER :
D. Resistance R