Chapter 8: Let us answer these (Page-159)
Q1. Name the
factors on which the resistance of a conductor depends.
Ans: - 1.The
length of the conductor.
2. The area of the cross section of
the wire.
3. The nature of the material of the
conductor.
4. Temperature.
Q2. Through
which of the wires – a thick one and a thin one of the same material will
current flow easily, when connected to the same battery or cell ? Why?
Ans: - The
current will flow easily to the thick wire. Because, resistance is less in
thick wire than thin wire of the material and condition.
Q3. Supposed
the potential difference across an electrical component of fix resistance
decreases to half of its former value.
Ans: -
According to the question, resistance R remains the same when V decreased to 1/2 V, I will increase to
twice.
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