Question

Please Answer all 3 completely! Thank you <3

1. In an integrated circuit, the current density in a 2.4-μm-thick × 72-μm-wide gold film is 7.0×10⁵ A/m^2

Part A: How much charge flows through the film in 15 min? Express your answer to two significant figures and include the appropriate units.

2. The current in an electric hair dryer is 10 A . How many electrons flow through the hair dryer in 5.8 min ? Express your answer using two significant figures.

3. How long must a 0.56-mm-diameter aluminum wire be to have a 0.40 A current when connected to the terminals of a 1.5 V flashlight battery? Express your answer to two significant figures and include the appropriate units.

What is the current if the wire is half this length? Express your answer to two significant figures and include the appropriate units.

Answer 1