Enter the magnetic flux density (Tesla), the length of the solenoid (m), magnetic constant, and the number of turns into the calculator to determine the Solenoid Current.

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## Solenoid Current Formula

The following formula is used to calculate the Solenoid Current.

**Is = (B/u)*L/N**

- Where Is is the Solenoid Current (amps)
- B is the magnetic flux density (Tesla)
- L is the length of solenoid (m)
- magnetic constant
- N is the number of turns

## How to Calculate Solenoid Current?

The following example problems outline how to calculate Solenoid Current.

**Example Problem #1**

- First, determine the magnetic flux density (Tesla). In this example, the magnetic flux density (Tesla) is determined to be 140 .
- Next, determine the length of solenoid (m). For this problem, the length of solenoid (m) is measured to be 50 .
- Next, determine the number of turns. In this case, the number of turns is found to be 7.
- Next, determine the magnetic constant. This is 10 for this problem.
- Finally, calculate the Solenoid Current using the formula above:

Is = (B/u)*L/N

Inserting the values from above and solving yields:

Is = (140/10)*50/7 = 100 (amps)

**Example Problem #2**

Using the same method as above, determine the variables required by the formula. For this example problem, these are:

magnetic flux density (Tesla) = 75

length of solenoid (m) = 17

number of turns = 5

magnetic constant = 2.25

Enter these given values into the calculator or above yields:

Is = (75/2.25)*5/17 = 9.803** **(amps)