Parallel Circuits Lesson

SERIES AND PARALLEL CIRCUIT

By Ciara Paddayuman

Multiple Choice

The symbol shown represents a

• battery

• resistor

• capacitor

• transistor

Multiple Choice

The bulbs in the circuit below  are connected   .

• Series Circuit

• Parallel Circuit

Multiple Choice

When three resistors are combined in series the total  resistance of the combination is

• Greater than any of the individual resistance values.

• Less than any of the individual resistance values.

• The average of the individual resistance values.

CIRCUIT ELEMENTS AND DIAGRAMS

A circuit diagram is a logical picture of what is connected  to what.

PHYSICS

CIRCUIT ELEMENTS AND DIAGRAMS

PHYSICS

Multiple Choice

Does the bulb light?

• Yes

• No

• I'm not sure

OHM'S LAW

PHYSICS

• ​Ohm's law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit.

SERIES AND PARALLEL CIRCUIT

PHYSICS

SERIES CIRCUIT: CURRENT

PHYSICS

• Electronic Components in a series circuit share the same current.

SERIES CIRCUIT: RESISTANCE

PHYSICS

• Total resistance in a series circuit is equal to the sum of the individual resistances.

• Thus total resistance in a series is greater than any of the individual resistances.​

SERIES CIRCUIT: VOLTAGE

PHYSICS

• Total voltage in a series circuit is equal to the sum of the individual voltage drops.

• Battery (dry cell)​

SAMPLE PROBLEM: SERIES CIRCUIT

PHYSICS

SAMPLE PROBLEM: SERIES CIRCUIT

PHYSICS

Find the current passing through and the voltage across each of the resistors in the circuit below.

Open Ended

Three resistors of 25.0 $$\Omega$$ , 30.0 $$\Omega$$  , and 40.0 $$\Omega$$ are in a series circuit with a 6.0-volt battery. What is the current in the circuit?

SAMPLE PROBLEM: SERIES CIRCUIT

PHYSICS

Find the current passing through and the voltage across each of the resistors in the circuit below

Multiple Choice

The battery current (I) is

• 3 A

• 2 A

• 1 A

• 0.67 A

• 0.5 A

PARALLEL CIRCUIT: CURRENT

PHYSICS

Total current in a parallel circuit is equal to the sum of the individual branch currents.

PARALLEL CIRCUIT: RESISTANCE

PHYSICS

Total current in a parallel circuit is equal to the sum of the individual branch currents.

PARALLEL CIRCUIT: VOLTAGE

PHYSICS

Electronic Components in a parallel circuit share the same voltage.

SAMPLE PROBLEM: PARALLEL CIRCUIT

PHYSICS

Multiple Choice

What things about the resistors in this circuit are the same  for all three?

• Current (I)

• Potential difference (V)

• Resistance (R)

• A and B

• B and C-

Multiple Choice

The battery current (I) is

• 3 A

• 2 A

• 1 A

• 1.5 A