A Series Circuit Consists of a Battery with Internal Resistance

question 18

Multiple Choice

A series circuit consists of a battery with internal resistance r and an external resistor R.If these two resistances are equal (r = R) then the energy dissipated per unit time by the internal resistance r is:

• A)the same as by R
• B)half that by R
• C)twice that by R
• D)one third that by R
• E)unknown unless the emf is given