Five readings of current while studying the dependence of Potential Difference across Resistor were taken. Plotting a graph, a straight line was obtained. What does it signify?

The graph with a straight line of potential difference (V) across a resistor on current (I) passing through it indicates that the potential difference (V) is directly proportional to the current (I) which flows through it, i.e., (V ∝ I).

The method to find the resistance of a resistor by the help of the graph is to read the current value in amperes at the given interval, which is I₀, in relation to a given voltmeter reading (V₀). Now, from Ohm’s law, we are aware that:

V = I × R

For resistance, the formula can be also written as,

R = VI

Now, by putting the value of V = V₀ and I = I₀, we can obtain:

R = V₀(value of potential difference) / I₀(value of current)

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Five readings of different values of current while studying the dependence of Potential Difference across Resistor were taken. Plotting a graph between V and I, a straight line was obtained. What does it signify?

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CBSE CLASS XII Related Questions

2.
Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

3.
This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

6.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

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Five readings of different values of current while studying the dependence of Potential Difference across Resistor were taken. Plotting a graph between V and I, a straight line was obtained. What does it signify?

Related Questions

CBSE CLASS XII Related Questions

2.Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

3.This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

6.Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

3.
This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

6.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?