Question

you are given the following current-time graph from two different sources

a) name the type of current in two cases
b)Identify any one source for each type of currents
c) what is the frequency of current in case II in India?
d) use above graph to write two differences between current in two cases

Answer 1

(a)in case 1 direct current

in case 2alternative current

(B)in case 1 battery

In case 2 power supply

(C) 50 hz

(D) in case 1 current is constant and is in positive state

In case 2 current is variable and is in both positive and negative state

Answer 2

Explanation:

First graph is DC current source since direction of current doesn't change and second graph is AC current their direction change with respect to time.

(ii) DC source is battery and AC source is AC generator.

(iii) Frequency of AC in India=50Hz

(iv) (a) DC value is constant but AC value is varies with respect to time.

(b) Direction of current not changes but in AC direction changes from negative to positive.

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