A battery of internal resistance `2 Omega` is connected ot a variable resistor whose value can vary from `4 Omega` to `10 Omega`. The resistance is initially set at `4 Omega`. If the resistance is now increased thenA. power consumed by it will decreaseB. power consumed by it will increaseC. power consumed by it may increase or may decreaseD. power consumed will first increase then decrease

A battery of internal resistance `2 Omega` is connected ot a variable

1.	A battery of internal resistance `2 Omega` is connected ot a variable resistor whose value can vary from `4 Omega` to `10 Omega`. The resistance is initially set at `4 Omega`. If the resistance is now increased thenA. power consumed by it will decreaseB. power consumed by it will increaseC. power consumed by it may increase or may decreaseD. power consumed will first increase then decrease
Answer» Correct Answer - A (a) `P = I^(2) R = ((V)/(R ))^(2) R = (epsilon^(2))/((R + r)^(2)) R` `epsilon` is constant and `(R + r)` increases rapidly then `P darr`

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