Question

A student has three resistors,3 ohms,4 ohms and 6 ohms respectively. He wants to make use of these three resistors to form a new value of resistance for his electrical circuit. Which value is he not able to get?
a. 2 ohm
b. 2.4 ohm
c. 8 ohm
d. 9 ohm

The person who answers correctly will be marked brainliest. ​

Answer 1

Given :   R1​=2Ω     R2​=4Ω      R3​=6Ω

Parallel combination :

Equivalent resistance   Rp​1​=R1​1​+R2​1​+R3​1​

Rp​1​=21​+41​+61​

⟹ Rp​=1112​Ω

Series Combination :

Equivalent resistance   Rs​=R1​+R2​+R3​=2+4+6=12Ω