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ProfRob
ProfRob
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Quesiton Question regarding ohmOhm's law and power lawdissipated

Consider a circuit which has constant source of 100V and Power of 50W.The circuit is purely resistive with resistance of 5 ohms,

From Power law $I=P\div V$$I=P/V$ so $I=50/100 =0.5$A, but from ohm's law $I=V\div R=100/5=20$ whichA. Which one is to be considered correct? Also, if use $I=0.5$ we have power dissipated at resistor $0.5^2 * 5=1.25$$I^2 R = 0.5^2\times 5=1.25$W, so what happens to the remaining power ?

Quesiton regarding ohm and power law

Consider a circuit which has constant source of 100V and Power of 50W.The circuit is purely resistive with resistance of 5 ohms,

From Power law $I=P\div V$ so $I=50/100 =0.5$, but from ohm's law $I=V\div R=100/5=20$ which one is to be considered ? Also if use $I=0.5$ we have power dissipated at resistor $0.5^2 * 5=1.25$ so what happens to the remaining power ?

Question regarding Ohm's law and power dissipated

Consider a circuit which has constant source of 100V and Power of 50W.The circuit is purely resistive with resistance of 5 ohms,

From Power law $I=P/V$ so $I=50/100 =0.5$A, but from ohm's law $I=V\div R=100/5=20$A. Which one is to be considered correct? Also, if $I=0.5$ we have power dissipated at resistor $I^2 R = 0.5^2\times 5=1.25$W, so what happens to the remaining power ?

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Plank
Plank
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Quesiton regarding ohm and power law

Consider a circuit which has constant source of 100V and Power of 50W.The circuit is purely resistive with resistance of 5 ohms,

From Power law $I=P\div V$ so $I=50/100 =0.5$, but from ohm's law $I=V\div R=100/5=20$ which one is to be considered ? Also if use $I=0.5$ we have power dissipated at resistor $0.5^2 * 5=1.25$ so what happens to the remaining power ?