Physics Ch 26 Conceptual

C

A resistor and a capacitor are connected in series to an ideal battery of constant terminal voltage. When the system reaches its steady state, what is the voltage across the resistor and the capacitor? A)The voltage across both the resistor and the capacitor is equal to one-half of the terminal voltage of the battery. B)The voltage across both the resistor and the capacitor is equal to the terminal voltage of the battery. C)The voltage across the resistor is zero, and the voltage across the capacitor is equal to the terminal voltage of the battery. D)The voltage across the resistor is equal to the terminal voltage of the battery, and the voltage across the capacitor is zero. E)The voltage across both the resistor and the capacitor is zero.

D

A resistor, capacitor, and switch are all connected in series to an ideal battery of constant terminal voltage. Initially, the switch is open. What is the voltage across the resistor and the capacitor at the moment the switch is closed? A)The voltage across both the resistor and the capacitor is zero. B)The voltage across the resistor is zero, and the voltage across the capacitor is equal to the terminal voltage of the battery. C)The voltage across both the resistor and the capacitor is equal to the terminal voltage of the battery. D)The voltage across the resistor is equal to the terminal voltage of the battery, and the voltage across the capacitor is zero. E)The voltage across both the resistor and the capacitor is equal to one-half of the terminal voltage of the battery.

D

As additional resistors are connected in parallel to a constant voltage source, how is the power supplied by the source affected? A)The power supplied by the sources remains constant. B)The power supplied by the source decreases. C)The effect on the power supplied by the source cannot be determined without knowing the voltage of the source. D)The power supplied by the source increases.

C

As additional resistors are connected in series to a constant voltage source, how is the power supplied by the source affected? A)The power supplied by the sources remains constant. B)The power supplied by the source increases. C)The power supplied by the source decreases. D)The effect on the power supplied by the source cannot be determined without knowing the voltage of the source.

1 5 6

Consider three resistors with unequal resistances connected in parallel to a battery. Which of the following statements are true? 1)The voltage across each of the resistors is the same and is equal in magnitude to the voltage of the battery. 2)The current flowing through each of the resistors is the same and is equal to the current supplied by the battery. 3)The equivalent resistance of the combination of resistors is greater than the resistance of any one of the three resistors. 4)The algebraic sum of the voltages across the three resistors is equal to the voltage supplied by the battery. 5)The equivalent resistance of the combination of resistors is less than the resistance of any one of the three resistors. 6)The algebraic sum of the currents flowing through each of the three resistors is equal to the current supplied by the battery.

3 4 6

Consider three resistors with unequal resistances connected in series to a battery. Which of the following statements are true? 1)The algebraic sum of the currents flowing through each of the three resistors is equal to the current supplied by the battery. 2)The equivalent resistance of the combination of resistors is less than the resistance of any one of the three resistors. 3)The current flowing through each of the resistors is the same and is equal to the current supplied by the battery. 4)The equivalent resistance of the combination of resistors is greater than the resistance of any one of the three resistors. 5)The voltage across each of the resistors is the same and is equal in magnitude to the voltage of the battery. 6)The algebraic sum of the voltages across the three resistors is equal to the voltage supplied by the battery.

1 5 6

Which of the following statements are true? Check all that apply. 1)A voltmeter is used to measure voltage. 2)An ammeter has a large internal resistance. 3)An ammeter must be placed in parallel with a resistor to measure the current through the resistor. 4)A voltmeter has a small internal resistance. 5)A voltmeter must be placed in parallel with a resistor to measure the voltage across the resistor. 6)An ammeter is used to measure current.

B D

Which of the following statements are true? Check all that apply. A)Kirchhoff's junction rule is based on the conservation of energy. B)At any junction point in a circuit, the sum of all the currents entering the junction must equal the sum of all the currents leaving the junction. C)Kirchhoff's loop rule is based on the conservation of charge. D)The sum of the changes in potential around any closed loop of a circuit must equal zero.