resistor
in each of following circuits.
(a) A 6 V battery in series with
and resistors
(b) A 4 V battery in parallel
with 
and resistors
Answer:
(a) The circuit is shown below
Equivalent resistance,
Current through 
resistor,
(1/2)
(As and 
resistances
are in series and inseries, current remains same).
Power used
(1)
(b) The circuit is shown below
Potential across 2 0 resistor, V
= 4 V
(As V remains same in both the
resistances).
Power used
(1/2)
Power used in the both cases is
same. (1)
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