Two identical nichrome heating elements, each of resistance 50Ω, are available for use in a toaster that is connected to a 230V d.c. source.
a. (i) When only one element is connected across the source, calculate the power it consumes.
b. (ii) The two elements are now connected in parallel across the same source. Determine the total power consumed by the toaster in this configuration.
c. (iii) Find the percentage increase in power obtained in part (ii) compared with part (i), and explain briefly why this change occurs.