Physics Flashcard-Module 6-DC Circuits

Front

What is the terminal voltage of a battery when current is flowing?

Back

Less than the emf.

Front

What determines the time constant (τ) of an RC circuit?

Back

The resistance (R) and the capacitance (C).

Front

What does Kirchhoff's junction rule conserve?

Back

Charge.

Front

What is the first step in simplifying a complex circuit with series and parallel combinations?

Back

Analyze it using Kirchhoff's rules directly.

Front

What is the formula to calculate the total resistance in a series circuit?

Back

R_total = R1 + R2 + R3 + ...

Front

How do you calculate the current flowing through a circuit with a known voltage and resistance?

Back

Use Ohm's Law: I = V/R.

Front

What is the relationship between voltage, current, and resistance in a circuit?

Back

Ohm's Law: V = I * R.

Front

What happens to the total resistance in a parallel circuit as more resistors are added?

Back

The total resistance decreases.

Front

What is the unit of capacitance?

Back

Farad (F).

Front

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

Back

The current decreases.