Magnetism And Magnetic Induction Flashcards
1
Q
Name the process that causes a Voltage/Potential difference across a solenoid due to the movement of a nearby magnet.
A
Electromagnetic induction.
2
Q
Why would a material be a good Electricity conductor?
A
•It has free electrons
•The electrons are free to MOVE
3
Q
Advantages of Transmitting at very high voltage.
A
1) Reduces heat loss.
2) P=VI.
3)Low and less reduced current.
4
Q
State one disadvantage of increasing diameter of a wire/cable.
A
1) More heat loss
2)Cables are heavier.
5
Q
What will you see on a graph if the coil spins faster?
State two points.
A
1) More frequency/Less time
2)greater amplitude/higher maximum and lower points.
6
Q
How can you make the current goes in always one direction?
A
Add a diode. [Semi-Conductor Diode]
