An initially uncharged 88-µF capacitor is placed in series with a resistance of 802 and a source of 12V. Find, (a) The initial and final voltage across the resistor.

The student engineer of a campus radio station wishes to verify the effectiveness of the lightning rod on the antenna mast (see the figure below). The unknown resistance Ry is between points C and E. Point E is a "true ground," but is inaccessible for direct measurement because the stratum in which it is located is several meters below Earth's surface. Two identical rods are driven into the ground at A and B, introducing an unknown resistance Ry. The procedure for finding the unknown resistance Rx is as follows. Measure resistance Ry between points A and B. Then connect A and B with a heavy conducting wire and measure resistance R, between points A and C.

What is the second equation?

Compare alternative and direct currents by comparing their physical properties. (Explain alternans, cycles, periods, frequency terms during this comparison. Also in this comparison, explain the electron flow directions separately in alternating and direct current)