A student carries out an experiment and plots the $V-I$ graph of three samples of nichrome wire with resistances $R_1, R_2$ and $R_3$ respectively (Figure.). Which of the following is true?
A student carries out an experiment and plots the $V-I$ graph of three samples of nichrome wire with resistances $R_1, R_2$ and $R_3$ respectively (Figure.). Which of the following is true?
- A
${R_1} = {R_2} = {R_3}$
- B
${R_1} > {R_2} > {R_3}$
- C
${R_1} < {R_2} < {R_3}$
- D
${R_2} > {R_3} > {R_1}$
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