Write down the equations for the instantaneous charge and current for charging and process in a dc RC series circuit. At t = RC, find the percentage of charges and currents in both the processes? How to find the time constant from current vs. time and charge vs. time graphs.

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

Which situation will have the highest resistance? a. long wire and high temperatureb. short wire and high temperaturec. long wire and cold temperaturedshort wire and low temperature

What is a carrier wave and how does it affect what you hear on the radio