1. Why electric trains don't feel any current shock. There are high voltage wires dirrectly above train, it can induces charges, doesn't it.
2. In ac plug , 200W bilb can glow, 100W can also work, a fan can work or anything which we run in our houses. Load may be very small or larger also.
I want 2 ask, if I have a small load lets ay 100W bulb, it draws less current, while a 200W bulb can draw larger currents. Similarly a computer tales larger lod.
It means 100W bulb have larger resistance while 200W bulb have less. But in actual I don't any resistive element. How to explain this. How does any load draws current, according to its need.
3. In CE transistor application, when we say its input & output impdence. What are we actually pointing at.
Its input resistance frrom what???????????
2. In ac plug , 200W bilb can glow, 100W can also work, a fan can work or anything which we run in our houses. Load may be very small or larger also.
I want 2 ask, if I have a small load lets ay 100W bulb, it draws less current, while a 200W bulb can draw larger currents. Similarly a computer tales larger lod.
It means 100W bulb have larger resistance while 200W bulb have less. But in actual I don't any resistive element. How to explain this. How does any load draws current, according to its need.
3. In CE transistor application, when we say its input & output impdence. What are we actually pointing at.
Its input resistance frrom what???????????