Understanding Ohm's Law and Basic Electronics

What is the primary reason electrons move from one place to another?

• They seek areas of lower electron pressure.

• They are pulled by gravitational forces.

• They are pushed by magnetic fields.

• They are attracted to each other.

How is voltage defined in the context of electron movement?

• The speed at which electrons move.

• The resistance faced by electrons.

• The difference in electron pressure between two points.

• The total number of electrons in a circuit.

In electronics, how is the direction of current flow typically described?

• From negative to positive.

• From positive to negative.

• In a circular motion.

• In a random pattern.

What is the relationship between electron flow and electric current?

• Electric current is the same as electron flow.

• Electric current is slower than electron flow.

• Electric current is the opposite of electron flow.

• They are unrelated.

What causes resistance in a material?

• The speed of electron flow.

• The collisions of electrons with atoms.

• The absence of electrons.

• The temperature of the material.

How does high resistance affect electron movement?

• It slows down electron movement.

• It speeds up electron movement.

• It has no effect on electron movement.

• It reverses the direction of electron movement.

According to Ohm's Law, what happens to the current if the voltage increases while resistance remains constant?

• The current becomes zero.

• The current increases.

• The current remains the same.

• The current decreases.

What is the mathematical expression of Ohm's Law?

• Current = Voltage + Resistance

• Resistance = Voltage x Current

• Voltage = Resistance / Current

• Voltage = Current x Resistance

If a circuit has a resistance of 240 ohms and a voltage of 120 volts, what is the current flowing through it?

• 0.5 amps

• 1 amp

• 0.25 amps

• 2 amps

How do you calculate resistance if you know the voltage and current?

• Resistance = Current / Voltage

• Resistance = Voltage / Current

• Resistance = Voltage x Current

• Resistance = Voltage + Current