Question

What is the resistance of resistor R1?
a. 6 Ohms
b. 20 Ohms
c. 37.5 Ohms
d. None of the above​

Answer 1

Answer:

$resistance = \frac{potential \: difference(v)}{current(i)}$

so 15÷0.4=37.5ohms

C option is right...

Answer 2

Answer:

Option C). 37.5 ohms.

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