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Campo Elétrico
Professor de Física
Graduado pela Universidade Estadual do
Maranhão - UEMA
Oswaldo Pinheiro Ramos Neto

26/2/2014

Professor Oswaldo Ramos

1
Campo Elétrico
1)
•
•
•
•

Introdução:
Influência do campo Gravitacional
Os atamos ( Objetos na Terra)
A terra é Eletrizada
Logo a interação entre o campo gravitacional os
Atamos Eletrizados e a terra gera campo
elétrico que resulta em força elétrica

26/2/2014

Professor Oswaldo Ramos

2
Campo Elétrico
2) Conceito
É a interação entre o campo de influência da carga
elétrica e o meio, resultando assim em força
elétrica.

26/2/2014

Professor Oswaldo Ramos

3
Campo Elétrico
3) Utilização o dia a da
• Wi-fi
• Sinal de celular
• Ondas de Tv analógica

26/2/2014

Professor Oswaldo Ramos

4
Campo Elétrico
Desafio:
Explique, o porque uma pessoa com tv de sinal
analógico ver a narração de um gol primeiro, do
que uma pessoa que assisti o mesmo jogo com Tv
a cabo?

26/2/2014

Professor Oswaldo Ramos

5
Campo Elétrico

Linhas de Forças

26/2/2014

Professor Oswaldo Ramos

6
Campo Elétrico

26/2/2014

Professor Oswaldo Ramos

7
Campo Elétrico
Gaiola de Faraday
Um corpo situado no interior de um campo
elétrico não sofre influência do campo elétrico

26/2/2014

Professor Oswaldo Ramos

8
Durante uma tempestade, um raio atinge um ônibus que trafega por
uma rodovia.

Pode-se afirmar que os passageiros:
a) não sofrerão dano físico em decorrência deste fato, pois os pneus de
borracha asseguram o isolamento elétrico do ônibus.
b) serão atingidos pela descarga elétrica, em virtude da carroceria
metálica ser boa condutora de eletricidade.
c) serão parcialmente atingidos, pois a descarga será homogeneamente
distribuída na superfície interna do ônibus.
d) não sofrerão dano físico em decorrência deste fato, pois a carroceria
metálica do ônibus atua como blindagem.
26/2/2014

Professor Oswaldo Ramos

9
Experimento

26/2/2014

Professor Oswaldo Ramos

10

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Aula segundo ano upaon

  • 1. Campo Elétrico Professor de Física Graduado pela Universidade Estadual do Maranhão - UEMA Oswaldo Pinheiro Ramos Neto 26/2/2014 Professor Oswaldo Ramos 1
  • 2. Campo Elétrico 1) • • • • Introdução: Influência do campo Gravitacional Os atamos ( Objetos na Terra) A terra é Eletrizada Logo a interação entre o campo gravitacional os Atamos Eletrizados e a terra gera campo elétrico que resulta em força elétrica 26/2/2014 Professor Oswaldo Ramos 2
  • 3. Campo Elétrico 2) Conceito É a interação entre o campo de influência da carga elétrica e o meio, resultando assim em força elétrica. 26/2/2014 Professor Oswaldo Ramos 3
  • 4. Campo Elétrico 3) Utilização o dia a da • Wi-fi • Sinal de celular • Ondas de Tv analógica 26/2/2014 Professor Oswaldo Ramos 4
  • 5. Campo Elétrico Desafio: Explique, o porque uma pessoa com tv de sinal analógico ver a narração de um gol primeiro, do que uma pessoa que assisti o mesmo jogo com Tv a cabo? 26/2/2014 Professor Oswaldo Ramos 5
  • 6. Campo Elétrico Linhas de Forças 26/2/2014 Professor Oswaldo Ramos 6
  • 8. Campo Elétrico Gaiola de Faraday Um corpo situado no interior de um campo elétrico não sofre influência do campo elétrico 26/2/2014 Professor Oswaldo Ramos 8
  • 9. Durante uma tempestade, um raio atinge um ônibus que trafega por uma rodovia. Pode-se afirmar que os passageiros: a) não sofrerão dano físico em decorrência deste fato, pois os pneus de borracha asseguram o isolamento elétrico do ônibus. b) serão atingidos pela descarga elétrica, em virtude da carroceria metálica ser boa condutora de eletricidade. c) serão parcialmente atingidos, pois a descarga será homogeneamente distribuída na superfície interna do ônibus. d) não sofrerão dano físico em decorrência deste fato, pois a carroceria metálica do ônibus atua como blindagem. 26/2/2014 Professor Oswaldo Ramos 9