All Flashcards

Label the diagram of the following series circuit.

Battery, Resistor 1, Resistor 2, Ammeter

Label the diagram of the following parallel circuit.

Battery, Resistor 1, Resistor 2, Ammeter

What is the effect of increasing the resistance in a series circuit?

Decreases the current in the entire circuit.

What is the effect of adding more branches to a parallel circuit?

Increases the total current drawn from the source and decreases the total resistance.

What happens to the voltage drop across a resistor if the current through it increases?

The voltage drop increases, according to Ohm's Law ( $V = IR$ ).

What happens to the total power dissipated in a series circuit if the voltage is increased?

The total power dissipated increases, since $P = \frac{V^2}{R}$ and resistance is constant.

What happens to the current in other branches of a parallel circuit if one branch is removed?

The current in the remaining branches stays the same (assuming an ideal voltage source), but the total current supplied by the source decreases.

What happens when the temperature of a resistor increases?

The resistance of the resistor typically increases, which can affect the current and voltage distribution in the circuit.

How do you calculate total resistance in a series circuit?

Add the individual resistances: $R_{total} = R_1 + R_2 + R_3 + ...$

How do you calculate total resistance in a parallel circuit?

Calculate the reciprocal of the total resistance by summing the reciprocals of the individual resistances: $\frac{1}{R_{total}} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3} + ...$

What are the steps to applying Kirchhoff's Junction Rule?

Identify the junction. 2. Determine the currents entering the junction. 3. Determine the currents leaving the junction. 4. Apply the rule: ΣI_in = ΣI_out.