Answer to Question #280588 in Electric Circuits for ali

Question

A certain electrical device has an unknown resistance. You have available a 12 V battery and an ammeter. How would you determine the value of the unknown resistance? Draw the necessary circuit connections.

Answer 1

Connect the circuit as shown below.

Read the value of current (I) flowing from the ammeter.

Calculate the value of the resistance, R using the formula,

$R=\frac{V}{I}$