Electromagnetic Induction

Define
1. Electromagnetic Induction
2. Magnetic Flux
3. Mutual Induction
4. Self Induction
State
1. Unit of Magnetic Flux
2. Faraday's Law
3. Lenz's Law
4. What is an electrical generator?
5. What is a transformer?
Recall
1. A coil opposes a.c. with both its ohmic resistance and back emf induced in it.
2. A capacitor blocks d.c. but conducts a.c.
3. Electromagnetic Induction occurs in a generator
4. Mains electricity is a.c.
Draw
1. A graph of an a.c. voltage/current against time.
2. A graph of d.c. voltage/current against time.
3. A labelled diagram of a transformer
Explain
1. Induced emf
2. Induced current
3. Alternating current
4. Step up/down transformer
5. Primary/secondary coil
Describe
1. An expt to show electromagnetic induction
2. Demonstrate Faradays and Lenx's Laws
3. Show a.c. using an ocsilloscope
4. Show the effect of an inductor on a.c.
5. Show a capacitor conducts a.c. but not d.c.
6. Demonstrate the action of a transformer
7. compare peak and rms values of a.c.
8. Show mutual/self induction
Formulae
List
1. Practical Applications of Generators
2. practical uses of inductors
3. practical uses of transformers

Resumo de Recurso

	Criado por Carmel Coleman aproximadamente 12 anos atrás