Question

Voltmeter
Q12. A manganin wire of length L. and radius R has a resistance of 40 ohms. 1 poir
How would the resistance of the wire change when: (a) Only length of the
wire becomes twice (b) Only diameter of the wire becomes half *
80 ohm, 20 ohm
O 80 ohm, 10 ohm
O 80 ohm, 80 ohm
80 ohm, 160 ohm​

Answer 1

Explanation:

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