Question

For different values of resistance R power consumptions in R are given. Then the which of the following values are not possible?

Answer 1

Answer: Heya frnd

Power =i^2r

= 1^2*4=4

So we can't have any power consumption values greater than 4

HOPE THAT HELPS

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Explanation:

Answer 2

Answer:

The maximum power consumption is 8W.

Explanation:

Given :

Resistance  = R

To find :

Maximum power consumption at every value of resistance R

Solution :

We know that,

Req = R + 1

and V = IR

∴ I = $\frac{V}{Req}$ ..................... (Equation 1)

Also,

Power is P

P = $I^{2} R$

put the value of I in P = $I^{2} R$,

We get,

P = $(\frac{V}{Req} )^{2} * Req$

∴ P = $\frac{4^{2} }{(R + 1)^{2} } * (R + 1)$

∴ P = $\frac{16}{R + 1}$

Now,

For maximum power consumption, R will always be equal to 1.

i.e. R = 1

∴ Pmax = $\frac{16}{1 + 1}$

∴ Pmax = $\frac{16}{2}$

∴ Pmax = 8W

Therefore,

Maximum power consumption for all value of resistance R is 8W.

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