Four resistors R₁, R₂, R₃ and R₄ are connected in series across a 100 V source such that R₁ < R₂ < R₃ < R₄. The maximum voltage drop occurs at which of the following resistors?

Concept

According to Ohm's Law, the electric current through a conductor between two points is directly proportional to the voltage across the two points.

I α V

V = IR

where, V = Voltage

I = Current

R = Resistance

Explanation

Given, R1 < R2 < R3 < R₄

When many resistances are connected in series with the voltage source, the maximum voltage drop will be across the resistor that has the highest resistance.

Among all the resistances, R₄ is the largest.

Therefore, the maximum voltage drop occurs across R₄.