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Published byNathaniel Rose Modified over 7 years ago

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Faradays Law of Induction A changing magnetic field induces an electric field. The induced electric field causes a current to flow in a conductor.

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Lenzs Law A changing magnetic field induces a current, which in turn produces a second magnetic field which opposes any further change in the first.

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Application of Lenzs Law magnetic field A magnet is pushed into a coil as shown below. What is the direction of the induced magnetic field in the coil?

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Application of Lenzs Law current induced A magnet is pushed into a coil as shown below. What is the direction of the current induced in the coil?

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Application of Lenzs Law A magnet is pushed into a coil as shown below. What is the direction of the current induced in the coil?

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Application of Lenzs Law magnetic field A magnet is pushed away from a coil as shown below. What is the direction of the induced magnetic field in the coil?

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Application of Lenzs Law current induced A magnet is pushed into a coil as shown below. What is the direction of the current induced in the coil?

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Application of Lenzs Law A magnet is pushed into a coil as shown below. What is the direction of the current induced in the coil?

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primary coil iron core Transformers Given the current as shown in the primary coil, determine the direction of the magnetic field induced in the iron core.

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Transformers Given the current as shown in the primary coil, determine the direction of the magnetic field induced in the iron core.

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induced magnetic field secondary coil Transformers Given the induced magnetic field as shown, determine the direction of the current induced in the secondary coil.

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Transformers Given the induced magnetic field as shown, determine the direction of the current induced in the secondary coil.

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For a transformer, P P = P S I P V P = I S V S I P / I S = V S / V P = N S / N P

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