Question

In our daily life we use 2 types of electric current
1)name the type of current in 2 case
2)identify any one source for each type of current
3)what is the frequency of current in case of our country
4)one the basic of these graphics list 2 difference between the two currents
5)out of 2 which 1 is used in transmitting electric power or long distances, why?

Answer 1

1. Direct current and alternating current respectively.

2. Battery and AC generator respectively.

3. Frequency of AC in our country is 50 Hz.

4. a) Magnitude of current in DC remains fixed, while in AC, it changes continuously.

b)Direction of current in DC reminds fixed, while in AC, its changes after every 1/2 n second, where n is the frequency of AC

5. For transmitting electric power over long distances, AC is used instead of DC, because loss of energy during transmission is comparatively very small.

Answer 2

Explanation:

1. Direct current and alternating current

respectively.

2. Battery and AC generator respectively.

3. Frequency of AC in our country is 50 Hz.

4. a) Magnitude of current in DC remains fixed, while in AC, it changes continuously.

b)Direction of current in DC reminds fixed,

while in AC, its changes after every 1/2 n

second, where n is the frequency of AC

5. For transmitting electric power over long distances, AC is used instead of DC, because it can be transmitted over longer distance with negligible energy losses.