what are the equations or procedure for the following questions2.Capacitor wired with a resistor, find the time constant. 3.Themagnetic field generated by a current at distance d from the wire,and the directions 4.The magnetic field in a solenoid, 5- Theefficiency, number of turns, and the voltages of the transformer 6-The equivalent capacitance in combination. 7- Resistors code. 8-The resonance frequency.
