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In the circuit shown, if $(v_{a} - v_{b}) = 10 v o l t,$ find ‘r’

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detailed solution

Correct option is D

i=20−52+r = 152+rA.Now, va−vb=20−2i = 20−302+rvolt.∴ 20−302+r=10 ⇒ r=1Ω.

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In the circuit shown, if va−vb=10 volt, find ‘r’

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In the circuit shown, if $(v_{a} - v_{b}) = 10 v o l t,$ find ‘r’