act science practice

Front

What is the relationship between capacitance and the time required to reach a given voltage across a capacitor in a circuit?

Back

As capacitance increases, the time required to reach a given voltage across the capacitor also increases.

Front

On which axis of a graph is the dependent variable typically placed?

Back

The dependent variable is placed on the Y-axis.

Front

What combination of capacitance and resistance will allow a capacitor to reach a given voltage in the shortest amount of time?

Back

A capacitance of 0.1 × 10–6 F and a resistance of 0.3 × 107 Ω.

Front

If the transfer of genes between two bacteria was interrupted and the last gene transferred was Gene A, how many minutes after the transfer began was it most likely interrupted?

Back

The transfer was most likely interrupted 60 minutes after it began.

Front

What was the main purpose of Experiment 3 in the context of capacitors?

Back

To determine how varying the capacitor’s capacitance affected the time required for the voltage across the capacitor to reach a set value.

Front

Define capacitance in the context of electrical circuits.

Back

Capacitance is the ability of a system to store an electric charge, measured in farads (F).

Front

What is the formula for calculating the time constant (τ) in an RC circuit?

Back

The time constant τ is calculated as τ = R × C, where R is resistance in ohms and C is capacitance in farads.

Front

Explain the significance of the time constant in an RC circuit.

Back

The time constant indicates the time it takes for the voltage across the capacitor to charge to approximately 63.2% of the maximum voltage.

Front

What happens to the voltage across a capacitor as it charges over time?

Back

The voltage across a capacitor increases exponentially until it reaches the maximum voltage provided by the power source.

Front

What is the role of resistance in an RC circuit?

Back

Resistance limits the flow of current in the circuit, affecting how quickly the capacitor charges or discharges.