M3 ELECTRICITY QUIZ

There are five resistors in a given series circuit and each resistor has 6 V dropped across it. The source voltage is _________.

• 6 V

• Depends on the current flow

• Depends on the resistor values

• 30 V

To measure the current out of the second resistor in a series circuit consisting of four resistors, an ammeter can be placed

• Between the second and third resistors

• At the negative terminal of the source

• Between the third and fourth resistors

• At any point in the circuit

A series circuit consists of three resistors. Two resistors are 1.2 kΩ each. The total resistance is 12 kΩ. The value of the third resistor is

• 9,600Ω

• 960Ω

• 1.2 kΩ

• Cannot be determined

If you know the current anywhere in a series circuit, you know the current everywhere in a series circuit.

• True

• False

The total resistance of a circuit is 680Ω. The percentage of the total voltage appearing across a 47Ω resistor that makes up part of the total series resistance is

• 68%

• 47%

• 69%

• 6.91%

All the voltage drops and the source voltage added together in a series circuit is equal to

• The total of the voltage drops

• The source voltage

• Zero

• The total of the source voltage and the voltage drops

The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates

• 12 W

• 48 W

• 3 W

• 8 W

REQUIRES A CALCULATOR:

A certain series circuit consists of a 1/8 W resistor, a 1/4 W resistor, and a 1/2 W resistor. The total resistance is 1200Ω. If each resistor is operating in the circuit at its maximum power dissipation, total current flow is

• 27 mA

• 2.7 mA

• 19 mA

• 190 mA

Three lights are connected in parallel across a 120 volt source. If one light burns out,

• The remaining two will glow dimmer

• The remaining two will glow brighter

• The remaining two will not light

• The remaining two will glow with the same brightness as before

Five 100 Ω resistors are connected in parallel. If one resistor is removed, the total resistance is

• 25 Ω

• 500 Ω

• 100 Ω

• 20 Ω