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OHM'S LAW

The intensity of current in an electrical circuit is equal to the voltage supplied by the battery divided by the resistance within the circuit.

V = I / R

The intensity of the current is directly proportional to the voltage, that is, if a battery  provides a higher voltage, the current  intensity increases.

The current intensity is inversely proportional to the resistance, that is, if we increase the resistance in the circuit, the opposition to the flow of electrons will also increase; hence, the intensity of the electric current will be lower.

Ohm triangle

To easily remember Ohm's law the Ohm's Law triangle is often used. The way this triangle works is simple, you just need to cover the magnitude you want to find out, then, the other two left will give you the key to the solution.

For example, if we want to calculate the intensity, we need to cover the letter I and we'll find out that it equals to V divided by R, and so on.

Cuestionario SCORM

Pregunta

Which of the following equalities is true?

Respuestas

1 Volt= 1Ohm/1 Amp

1 Amp=1 Volt/ 1Ohm

1 Volt=1 Amp/ 1Ohm

Pregunta

In a circuit formed by a battery connected to a5Vbulb whose resistance is 100Ω, How much is the circulating current intensity?

Respuestas

0,05 A

0,05 A

5 A

Pregunta

Which of the following is correct?

Respuestas

1V = 1mA x 1Ω

1mV = 1A / 1mΩ

1mV = 1A x 1mΩ

Pregunta

According to Ohm's law

Respuestas

The intensity is directly proportional to the resistance, and  inversely proportional to voltage

The resistance is directly proportional to the voltage and inversely proportional to the intensity

The voltage is directly proportional to the resistance and inversely proportional to the intensity

Pregunta

What happens when you increase the resistance in a circuit?

Respuestas

Current intensity also increases

Current intensity decreases

There is no variation in the electrical current intensity.

Pregunta

¿Qué ocurre cuando aumenta el voltaje?

Respuestas

Disminuye la intensidad de corriente

Aumenta la intensidad de corriente

La intensidad de corriente no experimenta variación

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Fill in the gaps

What current flows through a bulb powered by a battery of 12v if its resistance is 6Ω?

What if it is powered by a battery of 4v?

If a resistance of 990Ω is connected to a battery of a flask (4.5v) What will be the intensity that crosses the circuit?

A

Calculate the resistance of a bulb knowing that when connected to a battery of 5v a current of0.35A flows.

 Ω

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