Question

Two identical batteries, each of e.m.f. $2$ volt and internal resistance $1.0$ ohm are available to produce heat in an external resistance $R=0.5$ ohm by passing a current through it. The maximum Joulean power that can be developed across $R$ using these batteries is

• A. $1.28$ watt
• B. $2.0$ watt
• C. $8/9$ watt
• D. $3.2$ watt

Answer 1

The correct option is B $2.0$ watt