HomeQ&AWhat is the ratio of potential difference and current known as? b) The values of potential difference V applied across a resistor and the corresponding values of current I flowing in the resistor are given below: Potential difference, V in volts 2.5 5.0 10.0 15.0 20.0 25.0 Current, I in amperes 0.1 0.2 0.4 0.6 0.8 1.0 Plot a graph between V and I and calculate the resistance of the resistor. c) Name the law which is illustrated by the above V-I graph d) Write down the formula which states the relation between potential difference, current, and resistance e) The potential difference between the terminals of an electric iron is 240V and the current is 5.0A. What is the resistance of the electric iron?

What is the ratio of potential difference and current known as? b) The values of potential difference V applied across a resistor and the corresponding values of current I flowing in the resistor are given below: Potential difference, V in volts 2.5 5.0 10.0 15.0 20.0 25.0 Current, I in amperes 0.1 0.2 0.4 0.6 0.8 1.0 Plot a graph between V and I and calculate the resistance of the resistor. c) Name the law which is illustrated by the above V-I graph d) Write down the formula which states the relation between potential difference, current, and resistance e) The potential difference between the terminals of an electric iron is 240V and the current is 5.0A. What is the resistance of the electric iron?

ScienceClass 10ICSEAnswered 27 Mar 2026

Answer

The ratio of potential difference and the current is known as

The law illustrated by the V-I graph is Ohm’s

Following is the formula that states the relation between potential difference, current, and resistance:

Potential difference = Current × Resistance

Given,

Voltage, V = 240 volt Current, I = 5 amp We know that

V = IR

240 = 5 × R

R = 240/5 = 48 ohm

Science · Class 10

V = IR

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