9.1 SERIES AND PARALLEL CIRCUITS Name: Date: Block: (Reference: BC Science 9 pp. 306 – 319) Lights can be connected together in different ways. Some decorative lights are connected in such a way that if one bulb burns out the rest of the lights _______ work. Lights in your house are connected so that if one bulb burns out the lights in the rest of the house ________ work. These examples illustrate the difference between lights that are connected in ___________ and lights that are connected in _________. SERIES CIRCUIT series circuit: ___________________________________________ ______________________________________________________ __________________________________________________ There is only ______ pathway for current to flow.

7 · Web view9.1 Series and Parallel Circuits Name:Date: Block: (Reference: BC Science 9 pp. 306 – 319) Lights can be connected together in different ways. Some decorative lights

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9.1 SERIES AND PARALLEL CIRCUITS Name:Date:Block:

(Reference: BC Science 9 pp. 306 – 319) Lights can be connected together in different ways.

Some decorative lights are connected in such a way that if one bulb burns out the rest of the lights _______ work.

Lights in your house are connected so that if one bulb burns out the lights in the rest of the house ________ work.

These examples illustrate the difference between lights that are connected in ___________ and lights that are connected in _________.

SERIES CIRCUIT series circuit: ___________________________________________

________________________________________________________________________________________________________

There is only ______ pathway for current to flow.

VOLTAGE: the ______ of the voltages lost on the loads equals the total voltage supplied by the battery.

Page 2: 7 · Web view9.1 Series and Parallel Circuits Name:Date: Block: (Reference: BC Science 9 pp. 306 – 319) Lights can be connected together in different ways. Some decorative lights

CURRENT: current measured anywhere in the series circuit will be ______________.

RESISTANCE: resistors placed in series ___________ the total resistance of the circuit.

As a result, the total current throughout the circuit _________________.

EXAMPLE 1: Find the unknown voltage at V, and current at A, the resistance at each resistor and the total resistance in the following circuit.

PARALLEL CIRCUITS parallel circuits: _______________________________________

________________________________________________________________________________________________________ There are ____________ pathways for current to flow.

Page 3: 7 · Web view9.1 Series and Parallel Circuits Name:Date: Block: (Reference: BC Science 9 pp. 306 – 319) Lights can be connected together in different ways. Some decorative lights

Adding more pathways lowers resistance. junction point: _______________________________________

______________________________________________

• VOLTAGE: voltage is _____________ through each pathway.

• CURRENT: the ________ of the current on each pathway adds up to the total current supplied by the battery.

• RESISTANCE: resistors placed in parallel _____________ the total resistance of the circuit.

As a result, the total current through the circuit ______________. (A path with less resistance will be able to have more electrons travel on it and will therefore have greater current on it).

EXAMPLE 2: Find the unknown voltage at V, and current at A, the resistance at each resistor and the total resistance in the following circuit.