Lesson 4 Quiz 15 Voltage in series circuits

An increase in current through a resistor will result in a decrease in voltage drop across the resistor.

False

The current in a series circuit will decrease as it passes through each resistor.

False

When two batteries are connected as a series adding power source, the positive terminal of one battery is connected to the positive terminal of the other battery.

False

Current outside of the power source in a series circuit always flows from negative to positive.

True

The amount of voltage drop across the resistor will be directly proportional to its resistance and the circuit current.

True

The equation that defines the voltage drop across loads in a series circuit is E = I x R.

True

When two batteries are connected as a series additive power source, they produce a voltage that is greater than either of the batteries connected separately.

True

When two or more sources are connected series-opposing, the applied voltage may be less than the largest source.

True

The selector is in the 30 DCV position. Indicate the correct voltage value. a. 2 DCV b. 5 DCV c. 10 DCV d. 20 DCV

a. 2 DCV

Solve for the voltage drop across R1 by using the given voltage and resistance values. The R1 voltmeter reads ? . a. 4 V b. 8 V c. 12 V d. 16 V

a. 4 V

The voltage drop across R4 is ? a. 40 V b. 55 V c. 70 V d. 95 V

a. 40 V

The selector is in the 150 DCV position. Indicate the correct voltage value. a. 60 VDC b. 70 VDC c. 120 VDC d. 220 VDC

a. 60 VDC

In this circuit, the voltmeter is measuring the voltage dropped across the R4 lamp. The reading is ? . a. 6 V b. 8 V c. 10 V d. 12 V

a. 6V

The selector is in the 20 DCV position. Indicate the correct voltage value. a. -17.26 mVDC b. -17.26 VDC c. -0.1726 kVDC d. -1.726 kVDC

b. -17.26 VDC

First, find the total circuit resistance. Next, with the given voltage drop across R1 and using proportionality laws, find the total source voltage. The DC battery delivers ? to the circuit. a. 6 V b. 12 V c. 18 V d. 24 V

b. 12 V

Find the total resistance and circuit current to solve for the voltage drop across R2. The potential difference across the R2 resistor is ? . a. 8 V b. 12.5 V c. 25 V d. 62.5 V

b. 12.5 V

The formula for finding the voltage applied to a series circuit when using two series-opposing power sources is ? . a. ET = E LARGER - Rt b. ET = E LARGER - E SMALLER c. ET = E SMALLER + E LARGER d. ET = E LARGER + Rt - Ct

b. ET = E LARGER - E SMALLER

The resistor in the circuit that will have a voltage drop of eight volts is ? . a. R1 b. R2 c. R3 d. R4

b. R2

A voltage ? can be used to break down a supply voltage into two or more smaller voltages. a. converter b. divider c. multiplier d. reducer

b. divider

Voltage is a difference of ? between two points in a circuit. a. current and resistance b. potential c. resistance d. voltage drop

b. potential

The selector is in the 200 mDCV position. Indicate the correct voltage value. a. 0.015 mDCV b. 0.15 mDCV c. 1.5 mDCV d. 0.015 DCV

c. 1.5 mDCV

In the following circuit, the voltmeter is measuring the voltage drop across the R3 lamp. The voltmeter reading is ? . a. 12 V b. 16 V c. 20 V d. 24 V

c. 20 V

This circuit has a series additive power source. One battery is rated at 12 volts. The voltage of the other is unknown. The voltmeter measuring across the battery with the unknown potential reads ? . a. 6 V b. 12 V c. 24 V d. 30 V

c. 24 V

In this circuit, the voltmeter reading is ? a. 15 V b. 30 V c. 45 V d. 60 V

c. 45 V

In a series circuit, the total voltage dropped across all of the loads is equal to the ? . a. electromotive force b. resistance c. source voltage d. total current

c. source voltage

In a series circuit, loads that have the same ? will have the same resistance values. a. source voltage b. total current c. voltage dropped across them d. wattage consumed

c. voltage dropped across them

The selector is in the 1,000 DVC position. Indicate the correct voltage value. a. 227 DCV b. 2.27 DCkV c. 22.7 DCkV d. 277 DCkV

d. 277 DCkV

Use the resistance value of the lamps and the ammeter reading to find the voltage measured across the battery terminals. a. 12 V b. 18 V c. 24 V d. 30 V

d. 30V

The selector is in the 600 DCV position. Indicate the correct voltage value. a. 120 DCV b. 125 DCV c. 250 DCV d. 500 DCV

d. 500 DCV

In a series additive power source, the ? is equal to the sum of the individual voltages. a. current b. resistance c. total current d. total voltage

d. total voltage

In a voltage divider, the sum of the ? across all of the resistors must equal the applied voltage. a. applied power b. resistance c. total current d. voltage drops

d. voltage drops

The total of the ? across the loads of a series circuit can never exceed the total of the source voltages applied to that circuit. a. current b. resistance c. resistors d. voltage drops

d. voltage drops