Two appliances of power 40 W and 60W are connected in series and parallel respectively . Find which appliance has higher resistance in each case.
Dear Student,
Resistance of 40 W appliance be R1 and of 60 W appliance will be R2.
When connected in series, current through both the appliances is same. Let the common current be I.
Power,
So,
So, in series combination, 60 W appliance offers more resistance.
When connected in parallel, potential difference across the 40 W and 60 W appliances will be same. Let the potential be V.
Power,
So,
So, in parallel connection 40 W appliance show more resistance.
Regards
Resistance of 40 W appliance be R1 and of 60 W appliance will be R2.
When connected in series, current through both the appliances is same. Let the common current be I.
Power,
So,
So, in series combination, 60 W appliance offers more resistance.
When connected in parallel, potential difference across the 40 W and 60 W appliances will be same. Let the potential be V.
Power,
So,
So, in parallel connection 40 W appliance show more resistance.
Regards