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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Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

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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. The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

5.Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

5.
Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.