Surface Resistivity and Surface Resistance Measurements Using a Concentric Ring Probe Technique L D U electrodes material D (a) Sample #1. L D/2 U electrodes material D/2 (b) Sample #2. Figure 2: Current density. When the voltage U is kept constant, the current density for the thin and the thick bar is the same. The electric current density is often expressed by: J = I
The current interest rate on a 20 year treasury bond is 3.06%. The rate on the savings bond is 0.44% higher than the rate of the 20 Year Treasury bond. Given that US Savings Bonds are just as safe as the 20 year Treasury, getting almost a half-percent more yield is great.
So, for these the spot rate will be the same as the yield, i.e., 4% and 4.3%. 0.5 year spot rate, z1 = 4%. 1 year spot rate, z2 = 4.3%. We can now use this data to calculate the 1.5 year spot rate. Since 1.5 year bond is selling at par, its coupon will be 4.5%.