Circuits & Magnetism Unit Review

Front

What is the formula to calculate current (I) in a circuit?

Back

I = V/R, where V is the potential difference in volts and R is the resistance in ohms.

Front

What is the unit of current?

Back

Ampere (A) is the unit of current.

Front

What is the unit for resistance?

Back

Ohm (Ω) is the unit for resistance.

Front

If the potential difference is 12 volts and the resistance is 5 ohms, what is the current?

Back

2.4 A

Front

How can a wire become magnetic?

Back

A wire can become magnetic by running a current through it.

Front

What is the relationship between voltage, current, and resistance?

Back

Ohm's Law states that V = I * R.

Front

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

Back

The current decreases.

Front

What is the effect of increasing voltage on current in a circuit with constant resistance?

Back

The current increases.

Front

What is a series circuit?

Back

A series circuit is a circuit in which the components are connected end-to-end, so the current flows through each component one after another.

Front

What is a parallel circuit?

Back

A parallel circuit is a circuit in which the components are connected across common points or junctions, allowing multiple paths for the current.