The effective resistance of a coil at high frequency is more than its de resistance on account of : -

 The effective resistance of a coil at high frequency is more than its de resistance on account of : - 

a) Skin effect b) Proximity effects c) Eddy current losses d) All the above
by

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 The effective resistance of a coil at high frequency is more than its de resistance on account of : - All the above

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