Current the ______Of Charge in a Circuit

Current – the ______of charge in a circuit. Charge is measured in ______symbol______Current is measured in ______symbol______An ______is a ______per second *for current to flow in a circuit, the circuit must be closed/open

Voltage (Potential Difference) – When charge is flowing in a circuit, the energy of the charge, (______) is converted to other forms when going through a resistive device(light bulb, heating element, speaker, etc). The voltage is how much energy per unit charge is converted.

Voltage = Energy converted/unit charge (______)/(______) = Volts symbol______

Resistance - ______the flow of electrons in a complete circuit Measured in ______symbol______*The resistance of a resistor is independent of the current through the resistor and the potential difference across it.

OHM’S LAW *For most conductors (not semiconductors) the resistance is the ratio of voltage to current.

R = V/ I Problem: A 1.5 V battery is connected to a small light bulb with a resistance of 3.5 . What is the current through the bulb?

Circuits Symbols Series Circuit

The total resistance in a series circuit is the ______of the individual resistances.

Current in a series circuit is the ______throughout the circuit

The voltage in a series circuit is ______between the individual resistances.

1. In the diagram above, what is the total resistance?

2. What would be the voltage across each resistor?

3. What is the current flowing through each resistor?

Parallel Circuit

The total resistance in this circuit is ______than the resistance of each individual resistance.

The current in this circuit is ______between the branches of the circuit

The voltage is the ______across each resistor in a parallel circuit.

1. In the diagram above what is the total resistance in this circuit?

2. If R1 and R2 are the same (10), the current flowing through each branch of the circuit will be equal/unequal

3. What is the voltage across both 10 resistors?