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Title: The primary coil of a transformer has 100 turns and its secondary coil has 400 t Post by: ppk on Feb 25, 2012 The primary coil of a transformer has 100 turns and its secondary coil has 400 turns. If the ac current in the secondary coil is 2 A, what is the current in its primary coil?
A) 2 A B) 8 A C) 1/2 A D) 1/4 A E) 4 A Title: Re: The primary coil of a transformer has 100 turns and its secondary coil has 400 t Post by: duddy on Feb 26, 2012 B
Title: Re: The primary coil of a transformer has 100 turns and its secondary coil has 400 t Post by: transformers on May 31, 2012 to transmit electric power long distance, high voltage is used, the generator produces power at 1000 V and it needs to be transported at 2,000,000 V. would a ste-up or step-down transformer be needed?
Title: Re: The primary coil of a transformer has 100 turns and its secondary coil has 400 t Post by: duddy on May 31, 2012 Title: Re: The primary coil of a transformer has 100 turns and its secondary coil has 400 t Post by: TRANSFORMERS on May 31, 2012 YOU WISH TO MAKE A TRANSFORMER THAT WILL TURN A NORMAL 120 V OUTLET VOLTAGE INTO 20 V. WHICH WILL HAVE MORE TURNS, THE PRIMARY OR THE SECONDARY?
Title: Re: The primary coil of a transformer has 100 turns and its secondary coil has 400 t Post by: BearPro on Jun 12, 2012 YOU WISH TO MAKE A TRANSFORMER THAT WILL TURN A NORMAL 120 V OUTLET VOLTAGE INTO 20 V. WHICH WILL HAVE MORE TURNS, THE PRIMARY OR THE SECONDARY? Vs/Vp = Ns/Np you are talking about a step down transformer here. obviously secondary will have fewer turns. also start a new topic when posting a new question |