Exercise 1

1-Determine the resistance of a 75-W lightbulb connected to its proper source voltage of 110V. (Answer in two significant figures and units)

2-Determine the current through a 75-W lightbulb connected to its proper source voltage of 110V. (Answer in two significant figures and units)

3-Determine the resistance of a 250-W lightbulb connected to its proper source voltage of 110 V. (Answer in two significant figures and units)

4-Determine the current through a 250-W lightbulb connected to its proper source voltage of 110V.

Exercise 2

An 2100 W arc welder is connected to a 660-V rms ac line.

1-Calculate the peak voltage

2-Calculate the peak current

Exercise 3

What is the total amount of energy stored in a 12-V, 70 Ah car battery when it's fully charged ? PE=? kWh ( Answer in two significant figure)

Exercise 4

1-