Series Circuits and Parallel Circuits

Front

What is the definition of equivalent resistance in a circuit?

Back

Equivalent resistance is the total resistance of a circuit that can replace all individual resistances without changing the current or voltage in the circuit.

Front

How do you calculate the equivalent resistance in a series circuit?

Back

In a series circuit, the equivalent resistance (R_eq) is the sum of all individual resistances: R_eq = R1 + R2 + R3 + ...

Front

How do you calculate the equivalent resistance in a parallel circuit?

Back

In a parallel circuit, the equivalent resistance (R_eq) can be calculated using the formula: 1/R_eq = 1/R1 + 1/R2 + 1/R3 + ...

Front

What happens to the total current in a series circuit when more resistors are added?

Back

In a series circuit, adding more resistors increases the total resistance, which decreases the total current according to Ohm's Law (I = V/R).

Front

What happens to the total current in a parallel circuit when more branches are added?

Back

In a parallel circuit, adding more branches decreases the total resistance, which increases the total current according to Ohm's Law (I = V/R).

Front

What is the effect of a burned-out bulb in a series circuit?

Back

If one bulb burns out in a series circuit, the entire circuit is broken, and all bulbs will go out.

Front

What is the effect of a burned-out bulb in a parallel circuit?

Back

If one bulb burns out in a parallel circuit, the other bulbs can still light up because they have separate paths for current.

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): I = V/R.

Front

How do you find the current drawn by an electrical device?

Back

The current (I) can be found using the formula: I = P/V, where P is the power in watts and V is the voltage in volts.

Front

What is the formula for calculating power in an electrical circuit?

Back

Power (P) can be calculated using the formula: P = V * I, where V is voltage and I is current.