Question

HEYA GUYS
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Please answer this question​

Answer 1

Answer:

Explanation:

I = 5 A

t = 30 s

H =1.5 × 10^4 J

H = I^2Rt

1.5 × 10^4 J= (5)^2×r×30

1.5 × 10^4 J= 750r J

1.5 × 10^4 J/750 = r

r=20