Day 8, Unit 4 Current and Resistivity

Electric Current and Resistivity

​Day 8, Unit 4

Multiple Choice

Which graph best shows a circuit element at constant temperature that obeys Ohm's law?

Multiple Choice

A lamp uses a current of 0.50 ampere. The amount of charge passing through the lamp in 10 seconds is

• 0.050 C

• 2.0 C

• 5.0 C

• 20 C

Multiple Choice

A copper wire is part of a complete circuit through which current flows. Which graph below shows the relationship between the wire's length and its resistance?

Multiple Choice

Which graph below best represents how the resistance (R) of a series of copper wires of uniform length and temperature varies with cross-sectional area (A)?

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