If P - EI and E - IR- P -1 I2R2 I-23 E2R4 E2R

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Standard XII

Mathematics

Integration by Parts

If P = EI a...

Question

If $P = E I$ and $E = I R, P =$
1) $I^{2} R$
2) $\frac{I}{2}$
3) $E^{2} R$
4) $\frac{E^{2}}{R}$

1 only

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4 only

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1 and 4 only

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1 and 3 only

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2 and 4 only

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Solution

The correct option is C 1 and 4 only
Given that $P = E I$ and $E = I R$
which implies $P = (I R) I = I^{2} R$
Since $I = \frac{E}{R}$ , we get $P = E^{2} / R$
So, the correct option is $C$ .

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Q. If

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If P=EI and E=IR,P=1) I2R2) I23) E2R4) E2R

The correct option is C 1 and 4 onlyGiven that P=EI and E=IRwhich implies P=(IR)I=I2RSince I=ER, we get P=E2/RSo, the correct option is C.

If $P = E I$ and $E = I R, P =$
1) $I^{2} R$
2) $\frac{I}{2}$
3) $E^{2} R$
4) $\frac{E^{2}}{R}$

The correct option is C 1 and 4 only
Given that $P = E I$ and $E = I R$
which implies $P = (I R) I = I^{2} R$
Since $I = \frac{E}{R}$ , we get $P = E^{2} / R$
So, the correct option is $C$ .