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Class 10 Science Medium Mcq English Medium

A resistor of resistance R has 4 A flowing through it when connected to a 20 V source. The value of R is:

Question
A resistor of resistance R has 4 A flowing through it when connected to a 20 V source. The value of R is:
2 ohm
5 ohm
16 ohm
80 ohm
Answer
5 ohm
Detailed Explanation
R = V/I = 20 V / 4 A = 5 ohm.
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