Question: When a 1.6 kΩ resistor and a 120Ω resistor are connected in parallel, the total resistance is____________?

• 1. greater than 1.6 kΩ
• 2. greater than 120 but less than 1.6 kΩ
• 3. less than 120 but greater than 100 Ω
• 4. less than 100 Ω

Question: An ammeter has an internal resistance of 50 Ω. The meter movement itself can handle up to 1 mA. If 10 mA is applied to the meter, the shunt resistor, RSH1, is approximately___________?

• 1. 55 Ω
• 2. 5.5 Ω
• 3. 50 Ω
• 4. 9 Ω

Question: Four 8 Ω speakers are connected in parallel to the output of an audio amplifier. If the maximum voltage to the speakers is 12 V, the amplifier must be able to deliver to the speakers_____________?

• 1. 18 W
• 2. 1.5 W
• 3. 48 W
• 4. 72 W

Question: A sudden increase in the total current into a parallel circuit may indicate______________?

• 1. a drop in source voltage
• 2. an open resistor
• 3. an increase in source voltage
• 4. either a drop in source voltage or an open resistor

Question: Three 47 Ω resistors are connected in parallel across a 110 volt source. The current drawn from the source is approximately_______________?

• 1. 2.3 A
• 2. 780 mA
• 3. 47 mA
• 4. 7.06 A

Question: In a five-branch parallel circuit, there are 12 mA of current in each branch. If one of the branches opens, the current in each of the other four branches is_______________?

• 1. 48 mA
• 2. 12 mA
• 3. 0 A
• 4. 3 mA

Question: Five light bulbs are connected in parallel across 110 V. Each bulb is rated at 200 W. The current through each bulb is approximately___________?

• 1. 2.2 A
• 2. 137 mA
• 3. 1.8 A
• 4. 9.09 A

Question: Three lights are connected in parallel across a 120 volt source. If one light burns out_____________?

• 1. the remaining two will glow dimmer
• 2. the remaining two will glow brighter
• 3. the remaining two will not light
• 4. the remaining two will glow with the same brightness as before

Question: When an additional resistor is connected across an existing parallel circuit, the total resistance____________?

• 1. remains the same
• 2. decreases by the value of the added resistor
• 3. increases by the value of the added resistor
• 4. decreases

Question: Four resistors of equal value are connected in parallel. If the total voltage is 15 V and the total resistance is 600 Ω, the current through each parallel resistor is____________?

• 1. 25 mA
• 2. 100 mA
• 3. 6.25 mA
• 4. 200 mA