Question

There are four equal-value resistors connected in series with a 5 V source. A current of 4.63 mA is measured. What is the value of each resistor?

Answer 1

$I=\frac{E.m.f.}{R_{eff}}$

Where $I=4.63×10^{-3}A$

$E.m.f.=5V$

$R_{eff}=$ Effective resistance

$=4R$

Where $R=$ The value of each resistor

$4.63×10^{-3}=\frac{5}{4R}$

$R=269.98\Omega$