Consider a simple circuit shown in Fig 3.2. stands for a variable resi

1.	Consider a simple circuit shown in Fig 3.2. stands for a variable resistance R ′. R ′ can vary from R0 to infinity. r is internal resistance of the battery (r<<R<<R0). (a) Potential drop across AB is nearly constant as R′ is varied. (b) Current through R′ is nearly a constant as R′ is varied. (c) Current I depends sensitively on R ′. (d) I ≥V/r+R always.
Answer» (a), (d) (a) Potential drop across AB is nearly constant as R′ is varied. (d) I ≥V/r+R always.

Consider a simple circuit shown in Fig 3.2. stands for a variable resistance R ′. R ′ can vary from R0 to infinity. r is internal resistance of the battery (r<<R<<R0). (a) Potential drop across AB is nearly constant as R′ is varied. (b) Current through R′ is nearly a constant as R′ is varied. (c) Current I depends sensitively on R ′. (d) I ≥V/r+R always.

Answer»

(a), (d)

(a) Potential drop across AB is nearly constant as R′ is varied.

(d) I ≥V/r+R always.