Raman’s air-conditioner consumes 2160 W of power, when a current of 9.0 A passes
through it, What is the voltage drop when the air-conditioner is running?
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We are given the amount of power consumed by Raman’s air-conditioner when a current of 9 A flows through it.
(i). The meaning of voltage drop simply means the potential difference across Raman’s air conditioner when it is running which we have to find ,
Now to find the potential difference by knowing power and amount of electric current passing through passing through it we can use this relation ,
P = V× I ,
V
(ii). In India, we have a household voltage of 220 V current supply,
which changes time to time and in very short time intervals.
As there is no major difference in 220 V and 240 V A.C. supply , which we will study in higher classes not in this class in detail , So yes these are comparable voltages and this air conditioner can be used in houses.
(iii). If raman tries to connect his air conditioner to a 120 V supply line , then his air conditioner would do less amount of work and deliver less power(rate of doing work) , also as it’s potential difference is reduced to half and of course it’s resistance is constant , so the current passing through it would also become less and will be reduced to half itself , so basically the power would become 1/4th of the original power , also this situation might destroy your appliance or the air conditioner in Raman’s case.
Hope it helps..!!..
(i). The meaning of voltage drop simply means the potential difference across Raman’s air conditioner when it is running which we have to find ,
Now to find the potential difference by knowing power and amount of electric current passing through passing through it we can use this relation ,
P = V× I ,
V
(ii). In India, we have a household voltage of 220 V current supply,
which changes time to time and in very short time intervals.
As there is no major difference in 220 V and 240 V A.C. supply , which we will study in higher classes not in this class in detail , So yes these are comparable voltages and this air conditioner can be used in houses.
(iii). If raman tries to connect his air conditioner to a 120 V supply line , then his air conditioner would do less amount of work and deliver less power(rate of doing work) , also as it’s potential difference is reduced to half and of course it’s resistance is constant , so the current passing through it would also become less and will be reduced to half itself , so basically the power would become 1/4th of the original power , also this situation might destroy your appliance or the air conditioner in Raman’s case.
Hope it helps..!!..
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