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There is a current of 1.0A in the circui...

There is a current of 1.0A in the circuit shown below. What is the resistance of P?

A

`1.5 Omega`

B

`2.5 Omega`

C

`3.5 Omega`

D

`4.5 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
`I = 1.0 A`
` R_S = 3+ 2.5 + P`
` 9 = 5.5 + P " …(1)"`
`V = 9 V`
` :." "R_S = V/1 = 9/(1.0) = 9 Omega`
`R_s = 9` Subnstitute in (1).
` :." 9 = 5.5 + P`
` :." P = 9 - 5.5 = 3.5" Omega`
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