# How to convert Current to Voltage & Voltage to Current using resistor?

**URL:** <https://forumautomation.com/t/how-to-convert-current-to-voltage-voltage-to-current-using-resistor/6723>\
**Category:** Electrical\
**Created:** [July 10, 2019, 8:05pm UTC](https://forumautomation.com/t/how-to-convert-current-to-voltage-voltage-to-current-using-resistor/6723 "2019-07-10T20:05:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sivaranjith](https://forumautomation.com/letter_avatar_proxy/v4/letter/s/ba9def/32.png) [@sivaranjith](https://forumautomation.com/u/sivaranjith)\
**Post date:** [July 10, 2019, 8:05pm UTC](https://forumautomation.com/t/how-to-convert-current-to-voltage-voltage-to-current-using-resistor/6723/1 "2019-07-10T20:05:26Z")

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Convert Voltage to Current:

Measuring 0-10Vdc signal with a device that will only measure current inputs is incredibly easy. If the currently accessible input module accepts a signal of 0-20mA, but may not accept a signal of 0-10Vdc directly.

 ![image](https://cdn.forumautomation.com/original/2X/d/df63c0389bbb2c493b39111c243fc5d15a71ef1d.png)

Ohms law is used to calculate the value of a resistor to convert the 0-10Vdc signal to a current

Convert Current to Voltage:

Measure 0-20ma with a device measuring only voltage inputs. If the accessible voltage input module accepts a 0-10Vdc signal, but a 0-20ma signal may not be accepted immediately.

 ![image](https://cdn.forumautomation.com/original/2X/c/cb1102a0a4a5c2a9d438c68e55d5c7b1995220f7.png)

Ohms law is basically used to calculate a value of the resistor to transform the 0-20ma signal to a voltage.

- In order to prevent harm, you need to guarantee that in all conductor instances the internal current source has short-circuit protection.

- Due to its temperature dependence and inaccuracy, the internal resistor is a cause of mistake. 

- It is suggested to use resistors with tolerances that are as low as possible to achieve measuring outcomes that are as accurate as possible.