Question

A step-up transformer has a primary coil with 100 loops and a secondary coil with 800 loops. If the primary coil is supplied with a household current of 120V and 12 A,

(a) what voltage is produced in the secondary circuit?

? V

(b) what current flows in the secondary circuit?

? A

Answer #2

**Solution:-**

**Calculate voltage produced in the secondary circuit**

If the voltage in the primary is
120v.then the voltage in the secondary is ‘stepped up’ by a factor
of, **800/100 or 8**

So secondary voltage is, **120v
* 8 = 960 V (volt)**

**The voltage produced in
secondary Circuit is 960 V**

**Calculate current flows in the secondary circuit**

Conversely the current in the secondary is steeped down by a factor of 8 this gives a secondary current of

**12 A / 8 = 1.5 A
(ampere)**

**The current flows in secondary
Circuit is 1.5 A**

answered by: anonymous

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