Question
Question: A technician has only two resistance coils. By using these singly in series or in parallels, he is a...
A technician has only two resistance coils. By using these singly in series or in parallels, he is able to obtain the resistance of 3Ω,4Ω, 12Ωand 16Ω. Then, the resistance of the two coils are –
A
6 ohm and 10 ohm
B
4 ohm and 12 ohm
C
7 ohm and 9 ohm
D
4 ohm and 16 ohm
Answer
4 ohm and 12 ohm
Explanation
Solution
R1 = 4, R2 = 12
= 3Ω = 16 Ω