DC Current -10- Ohm's Law Concept

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In a physics experiment, a voltage-current graph is obtained. What is the resistance of the electronic device being measured?  Watch the video related to *DC CURRENT* in full: https://dailymotion.com/playlist/x93i4y

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00:00Hi friends, it's better to start learning now than regret not learning from the beginning.

00:09In a physics experiment, a voltage current graph is obtained.

00:15Using this graph, we are asked to find the resistance of the electronic device being measured.

00:24Without further ado, let's discuss it.

00:28Here's a larger view of the graph.

00:33Notice the shape of the curve.

00:36It's a straight line with a certain angle of inclination.

00:42This means the curve is a linear function.

00:46In other words, the voltage increases linearly as the electric current increases.

00:52Materials or electronic devices that have such a curve are known as ohmic materials.

01:01Mathematically, V equals R times I.

01:07However, we don't yet know the values of the voltage and electric current.

01:12Simple.

01:13Choose a point on the straight line, such as 0.85.

01:19This means the electric current is 8 milliampere, and the voltage is 5 volts, according to the units of the coordinate system.

01:31It seems we need to convert milliampere to amperes.

01:36This calculation process is quite easy.

01:40R is around 400 ohms.

01:45This is the resistance of the electronic device being measured.

01:49Happy learning, everyone!

01:50Happy learning, everyone!

01:51Happy learning, everyone!

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