Instructions:

Solve the problems by showing all the steps and answering all 7 questions, please. Thank you in advance

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1.) Electric Current:

A current of 15.0 mA is flowing through a conducting wire. How much charge is flowing through its cross-section in one minute? Express your final result in coulomb and as number of electrons.

2.) AC Current vs DC Current:

Certain heavy industrial equipment uses AC power that has a peak voltage of 600 V. What is the corresponding rms voltage?

3.) Electrical Power:

The lights on a car are inadvertently left on. They dissipate 95.0 W. About how long will it take for the fully charged 12.0-V car battery to run down if the battery is rated at 150 ampere-hours (Ah)?

4.) Ohm's Law: Resistance and Simple Circuits

A power transmission line is hung from metal towers with glass insulators having a resistance of 1.0 x 10⁹ ?. What current flows through the insulator if the voltage is 200 kV??

5.) Resistance and Resistivity:

A copper wire has a resistance of 0.5? at 20.0 ^oC and an iron wire has a resistance of 0.525? at the same temperature. At what temperature are their resistances equal?

6.) Kirchhoff's Rule:

Find currents I₁, I₂ and I₃ in the circuit shown below when:

a.) the switch is open

b.) the switch is closed

12 V 9 V X (1) (2) 12 4 ohms 7 ohms Y 8 ohms