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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Two resistors, A and B, are connected in a series circuit with a battery. The resistance of A is twice that of B. Which resistor dissipates more power? (a) Resistor A does. (b) Resistor B does. (c) More information is needed.

To determine
The resistor which dissipates more power.

Explanation

Given Info: Two resistors, A and B, are connected in series circuit with a battery. The resistance of A is twice that of B.

Explanation:

Formula to calculate the power is,

PB=I2RB

  • PB is the power dissipated in resistor B,
  • I is the current through the resistors,
  • RB is the resistance of resistor B,

Power dissipated in resistor A is,

PA=I2RA

  • PA is the power dissipated in resistor A,
  • I is the current through the resistors,
  • RA is the resistance of resistor A,

Resistance of A is twice that of B RA=2RB

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