Question

Two resistors r1=100 ohm and r2=220 ohm are connected in series across a voltage of 6.4v calculate the resistance of the resistor equivalent to r1 and r2

Answer 1

r_eq = 320 Ω

Step-by-step explanation:

It is asked to find the equivalent resistance of a series circuit formed by two resistors r₁ and r₂

r_eq = r₁ + r₂

r_eq = 100 + 220

r_eq = 320 Ω

with this value we can find the current that circulates through the circuit

V = r_eq i

i = V / r_eq

i = 6.4 / 320

i = 0.02 A