Sadia S. answered  05/02/22
PHD Maths and Physics Tutor, Teacher, and Lecturer!
According to Ohm's law:
Voltage (V) applied across any resistance is directly proportional to the current (I) flowing through it.
V ∝ I
V = I R, where R is the resistance of the resistor. Voltage is in Volts, resistance is ohm and current in Ampere.
3 = I * 20
I = 0.15 Ampere
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