You are given following current-time graphs from two different sources: i. Name the type of current in two cases. ii. Identify any one source for each type of these currents. iii. What is the frequency of the current in case (b) in India? iv. Use the above graphs to write two differences between the current in two cases.

Question

Philoid · Accepted Answer

i. The current in the first graph is direct current (DC) as it is changing with respect to time, i.e., the value of current is constant whereas in the second graph the value of current is changing with respect to time, i.e., it is an Alternating Current (AC).

ii. The dry cells which we use in our daily lives is a very common source of DC source. And the power supply to our houses is a very common example of AC source.

iii. The frequency of the AC supply in India is 50 Hz.

iv.