EVERYDAY SCIENCE

SCIENCE

PHYSICAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
As compare to short wires, long wires have
A
more resistance
B
no resistance
C
less resistance
D
same resistance
Explanation: 

Detailed explanation-1: -The resistance of a wire is directly proportional to the length of the wire. Hence, the longer wire has higher resistance.

Detailed explanation-2: -A longer wire has more resistance than a shorter wire of the same thickness and same material.

Detailed explanation-3: -The length of the wire is directly proportional to the resistance. The longer the wire, greater it’s resistance. The longer the wire is, more number of collisions occur while the electrons travel from one end of the wire to another. This increases the resistance.

Detailed explanation-4: -Long lengths of wire have more resistance than short lengths. Thus, long lengths of wire will cause a larger voltage drop than shorter lengths.

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