The Voltage Drop Across a Metal Bar Is $5.0 \mathrm {~V}$

question 86

Multiple Choice

The voltage drop across a metal bar is $5.0 \mathrm {~V}$ while a current of $10.0 \mathrm {~mA}$ flows through it. How much power does this bar dissipate?

• A) \(0.50 \mathrm {~kW}\)
• B) \(500 \mu \mathrm { W }\)
• C) \(2.5 \mathrm {~kW}\)
• D) \(50 \mathrm {~mW}\)

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