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Q. 6

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
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Short Answer

Rank in order, from largest to smallest, the powers to dissipated by the four resistors in FIGURE

The rank in which power is dissipated, from largest to smallest, is

See the step by step solution

Step by Step Solution

Step 1 . Given information

Given :

Voltage

Resistance

Power

Voltage

Resistance,

Power

Voltage

Resistance

Power

Voltage

Resistance

Power

Step 2. 

The potential difference across the first resistor is , and the resistance across the first resistor is R, as shown in figure (a).

The first resistor's power dissipated is,

The potential difference across the second resistor in the figure (b) is , and the resistance across the second resistor is .

The second resistor's power dissipated is,

The potential difference across the third resistor in figure (c) is , and the resistance across the third resistor is .

The third resistor's power dissipated is,

The potential difference across the fourth resistor in figure (d) is, and the resistance across the fourth resistor is .

The fourth resistor's power wasted is,

The rank of power dissipated by the four resistors, from greatest to smallest, is when the values of and are compared.

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