Question

How much current is drawn by the primary coil of a transformer which is stepdown 220 volt to 22 volt to operate a device with an impedance of 220 ohm ?

Answer 1

Here's your answer mate..
Good Luck ✌️✌️

Answer 2

Answer:

The current is 0.01 A.

Explanation:

Given that,

Voltage in primary coil =220  V

Voltage in secondary coil = 22 V

Impedance = 220 ohm

We need to calculate the current

Using formula of power

$P_{pc}=P_{sc}$

$E_{p}I_{p}=E_{s}I_{s}$

Where, E = voltage

I = current

Put the value of current

$E_{p}I_{p}=E_{s}\dfrac{E_{s}}{R_{s}}$

Put the value into the formula

$220\times I_{p}=\dfrac{22\times22}{220}$

$I_{p}=\dfrac{22\times22}{220\times220}$

$I_{p}=0.01\ A$

Hence, The current is 0.01 A.