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

Question: The currents into a junction flow along two paths. One current is 4 A and the other is 3 A. The total current out of the junction is_____________?

• 1. 1 A
• 2. 7 A
• 3. unknown
• 4. the larger of the two

Question: If there are a total of 120 mA into a parallel circuit consisting of three branches, and two of the branch currents are 40 mA and 10 mA, the third branch current is_________________?

• 1. 50 mA
• 2. 70 mA
• 3. 120 mA
• 4. 40 mA

Question: The power dissipation in each of four parallel branches is 1.2 W. The total power dissipation is________________?

• 1. 1.2 W
• 2. 4.8 W
• 3. 0.3 W
• 4. 12 W

Question: An oscillator produces___________oscillations?

• 1. Damped
• 2. Undamped
• 3. Modulated
• 4. None of the above

Question: If the crystal frequency changes with temperature, we say that crystal has___________temperature coefficient?

• 1. Positive
• 2. Zero
• 3. Negative
• 4. None of the above