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Which of the following is correct about resistivity of alloy manganin?

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Important Questions on Current Electricity

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Physics Crash Course JEE Main>Chapter 14 - Current Electricity>Level 1>Q 16

The following graph shows the I-V characteristics of
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Physics Crash Course JEE Main>Chapter 14 - Current Electricity>Level 1>Q 17
The electric current passes through a metallic wire produces heat because of
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JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 14 - Current Electricity>Level 1>Q 18
In the figure, a carbon resistor has bands of different colours on its body as mentioned in the figure. The value of the resistance is:
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Physics Crash Course JEE Main>Chapter 14 - Current Electricity>Level 1>Q 19
In the arrangement shown, the equivalent resistance between points A and B is kR. Then, the value of k is:-

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MEDIUM
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Physics Crash Course JEE Main>Chapter 14 - Current Electricity>Level 1>Q 20
The resistance of the series combination of two resistors is S. When they are joined in parallel the equivalent resistance becomes P. If S=nP, then the minimum possible value of n is
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Physics Crash Course JEE Main>Chapter 14 - Current Electricity>Level 1>Q 21

In the figure, the current flowing through 2R is,

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Physics Crash Course JEE Main>Chapter 14 - Current Electricity>Level 1>Q 22
Three resistances of 4Ω, each of which is connected in the form of an equilateral triangle. The effective resistance between the two corners is 
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JEE Main
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Physics Crash Course JEE Main>Chapter 14 - Current Electricity>Level 1>Q 23

In the electrical circuit shown below, what is the effective resistance between points P and Q ?

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