Understanding Ohm's Law

These flashcards cover the fundamental concepts of Ohm's Law, including definitions, relationships between variables, and practical analogies.

What does Ohm's Law state about the relationship between current, voltage, and resistance?

The current is directly proportional to the voltage and inversely proportional to the resistance.

What is the formula for Ohm's Law?

I = V/R.

What does 'I' represent in Ohm's Law?

Current measured in Amps.

In Ohm's Law, what does 'V' stand for?

Voltage measured in Volts.

What does 'R' denote in the context of Ohm's Law?

Resistance measured in Ohms.

What happens to current if voltage increases while resistance remains constant?

The current will increase.

What will occur to current if resistance is increased while voltage is constant?

The current will decrease.

How is the water flow analogy related to Ohm's Law?

The analogy explains how voltage is like water pressure, current is the flow, and resistance is the size/condition of the pipe affecting flow.

If I = 57.7 mA and V = 1.5V, how can resistance (R) be calculated?

By rearranging Ohm's Law: R = V/I = 1.5V / 0.0577A.

What is the relation between increased load demand and current flow in a circuit?

More devices using power simultaneously can reduce the current flow due to limited supply.