# phase shift of the current in the coil

#### ironasona

Joined Nov 12, 2020
53
How do i find the phase shift? 'I've done (a) but I don't know how to find phase shift .

When a direct current of 2A is passed through a coil, the potential difference across the coil is 20V. When an alternating current of 2A at a frequency of 40Hz is passed through the coil, the potential difference across the coil is 140V.

a) Find the current in the coil if it is connected to a supply of 230V, 50Hz.
b) What is the phase shift of the current in the coil with respect to the supply voltage?

#### Delta Prime

Joined Nov 15, 2019
1,311
Homework?

#### ironasona

Joined Nov 12, 2020
53
Homework?
no ,am trying to revise for my exam and found some questions online ,and trying to figure out how to do them .

#### Irving

Joined Jan 30, 2016
4,052
What do you know and can tell us about the relationship of current to voltage in an inductor? How did you work out part (a)?

#### ironasona

Joined Nov 12, 2020
53
What do you know and can tell us about the relationship of current to voltage in an inductor? How did you work out part (a)?
sure here , dnk if u can see it or not tho:

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#### ironasona

Joined Nov 12, 2020
53
no ,am trying to revise for my exam and found some questions online ,and trying to figure out how to do them .
also i dont even know where do i even start , to find the phase shift .

#### Irving

Joined Jan 30, 2016
4,052
OK, that looks good. What can you say about the phase relationship between current and voltage in a resistor?

And in a pure inductor?