NGSS Physics IS3T2: Circuits

Front

What is equivalent resistance in a circuit?

Back

Equivalent resistance is the total resistance of a circuit or a portion of a circuit, calculated by combining the individual resistances in series and/or parallel.

Front

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

Back

The current decreases according to Ohm's Law (I = V/R).

Front

If a battery supplies 10A of current to a parallel circuit with two identical bulbs, what is the current through each bulb?

Back

Each bulb would receive 5A of current.

Front

What is a conductor?

Back

A conductor is a material that allows electric current to flow through it easily, such as metals like iron.

Front

What is voltage measured in?

Back

Voltage is measured in volts.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor (I = V/R).

Front

What is the unit of resistance?

Back

The unit of resistance is ohms (Ω).

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, so the same current flows through all components. In a parallel circuit, components are connected across the same voltage source, allowing multiple paths for current.

Front

How does adding more resistors in series affect the total resistance?

Back

Adding more resistors in series increases the total resistance.

Front

How does adding more resistors in parallel affect the total resistance?

Back

Adding more resistors in parallel decreases the total resistance.