Resistors in series and parallel

Ohms law states that the current and voltage in a circuit are?

• Inversely proportional

• Directly proportional

• Not related

• Of no importance

What three things are required in an electrical circuit

• A source

• A load

• an earth electrode

• A means of transmission

• An alternator

What does emf stand for

• Electronic magnetic fiel

• Elecrical magnetic field

• Electro motive force

• Electro motive field

If we were to measure the voltage lost across the load we would call this the .............. or the.............?

• lost voltage

• voltage drop

• potential difference

• positive difference

_{True or False:- Ohms Law states:}

_{The current flowing in an electrical circuit is DIRECTIONALLY PROPORTIONAL to the voltage applied to the circuit and,}

_{INVERSELY PROPORTIONAL to the resistance of the circuit}

_{at a CONSTANT TEMPERATURE}

• True

• False

The total resistance of a series circuit can be calculated by adding each resistance together.

• True

• False

If all the resistances (loads) in a series circuit are equal they will each have an equal share of the total supply current.

• True

• False

The formula used to calculate Ohms Law is

• $V=I\ \times\ R$

• $Uo\ =\frac{V}{I}$

• $P\ =I\times V$

• $I\ =V\times R$

Three resistors, 3Ω, 3Ω and 3Ω are connected in series with a 24 volt supply. What is the voltage drop across each resistor.

• 3v

• 6v

• 8v

• 12v

Three resistors, 3Ω, 3Ω and 3Ω are connected in series with a 24 volt supply. What is the total current in the circuit?

• 3A

• 3.7A

• 2.67A

• 4.2A