8. The Electric Power of an electrical
appliance cannot be expressed by
*
a) VI
b) I. I. R
c) I. I/R
d) V.V/R
Answers
Explanation:
Given:The Electric Power of an electrical appliance cannot be expressed as
a) VI
b) I. I. R
c) I. I/R
d) V.V/R
To find : Correct option
Solution:
We know that electric power of electric appliance is given by P.
It can be expressed as
P= IV...eq1
Thus,Option A is correct.
Here I current in ampere and V is voltage in volt.
From Ohm's law,we know that V=IR...eq2;
R is resistance
Place eq2 in eq1
P=I.I.R
Therefore, Option B is correct.
By the same way,place value of I from eq2 in eq 1
P= V.V/R
Thus, Option D is correct.
Final answer:
Option C is correct answer.
The Electric Power of an electrical appliance cannot be expressed as I.I/R
Hope it helps you.
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