Assertion : In parallel combination of electrical appliances, total power combination is equal to the sum of the powers of the individual appliances,
Reason : In parallel combination , the voltage across each appliance is the same as required for the proper working of of eletrical appliance

Options

A. both assertion and reason are true and the reason is correct explanation of Assertion
B. both assertion and reason are true and the reason is not correct explanation of Assertion
C. Assertion is true , but the reason is false
D. both assertion and reason are false

Answer

a

Explanation

In parallel combination of electrical appliances
`(1)/(R ) = (1)/(R_(1)) + (1)/(R_(2)) + (1)/(R_(3))`
As voltage `(V)` across each appliance is same so
`(V^(2))/(R )= (V^(2))/(R_(1)) + (V^(2))/(R_(2)) + (V^(2))/(R_(3))orP=P_(1)+P_(2)+P_(3)`