KCET2023PhysicsCurrent Electricity
A wire of resistance R is connected across a cell of emf ( ) and internal resistance (r) . The current through the circuit is I . In time t , the work done by the battery to establish the current I is
Options
- AEIt
- B^2 t R
- CI R t
- DI^2 R t
Correct answer
D. I^2 R t
Step-by-step solution
The given situation is shown in the diagram. In time t , work done by the battery to establish the current I is given as. aligned W & =V q=V I t & [ q=I t] & =I R I t & [ V=I R] & =I^2 R t & aligned