Question

when a 12v battery is connected across an unknown resistor, there is a current of 2.5mA in circuit . find the value of the resistance of the resistor.​

Answer 1

Answer:

4800 ohm

Explanation:

on using ohm's law

V = IR

$12 = 2.5 \times {10}^{ - 3} \times r$

$\frac{12}{2.5 \times {10}^{ - 3} } = r$

$r = 4800 \: ohm$