9. The following question is about power dissipation in a resistor, which we didnÃ¢ÂÂt really cover in class. This topic is fairly easy though. In a circuit, all the power delivered by the battery must be dissipated by the elements to the circuit. This is simply a statement of the conservation of energy. How much energy dis- sipated depends on the resistance of the element and the voltage across the resistor, or the current through it. The relevant equa- tions for the problems are as follows. For a circuit element, the power dissipated (or generated) is P= IV, where V and I are the voltage across and current through a circuit element. We know that a resistor obeys OhmÃ¢ÂÂs Law V = IR, which means that for a resistor, the power dissipated is P = 1²R=V²/R. Consider the following two circuits with identical batteries and re- sistors. A В C R R RSRS R If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit B? If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit C?

9. The following question is about power dissipation in a resistor, which we didnÃ¢ÂÂt really cover in class. This topic is fairly easy though. In a circuit, all the power delivered by the battery must be dissipated by the elements to the circuit. This is simply a statement of the conservation of energy. How much energy dis- sipated depends on the resistance of the element and the voltage across the resistor, or the current through it. The relevant equa- tions for the problems are as follows. For a circuit element, the power dissipated (or generated) is P= IV, where V and I are the voltage across and current through a circuit element. We know that a resistor obeys OhmÃ¢ÂÂs Law V = IR, which means that for a resistor, the power dissipated is P = 1²R=V²/R. Consider the following two circuits with identical batteries and re- sistors. A В C R R RSRS R If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit B? If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit C?

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 35Q: (Indicates a review question, which means it requires only a basic understanding of the material to...

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