Number 5 and 6 i need just give answer

Physics

1 answer:

sashaice [31]2 years ago

8 0

Explanation:

voltage = current × resistance

12 V = 4.2 A × resistance

resistance = 12 V / 4.2 A = 2.857142857... Ohm

FYI :

4.2 A would be a lot for a small electronic device like a CD player. that would be 12×4.2 = 50.4 Watt, and the CD player would get really hot.

120 V = current × 12 Ohm

current = 120 V / 12 Ohm = 10 A

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