Chapter 26

When two or more resistors are connected in parallel to a battery, a) the equivalent resistance of the combination is less than the resistance of any one of the resistors. b) the voltage across each resistor is the same. c) the total current flowing from the battery equals the sum of the currents flowing through each resistor.

All of the given answers.

True or False: A series circuit is a current divider and a parallel circuit is a voltage divider circuit.

False

True or False: An RC circuit across a DC voltage source through an open circuit and switch. As soon as the switch is closed, the charge on the capacitor increases but the voltage across it decreases as a function of time.

False

True or False: An RC circuit is connected across a DC voltage source through an open switch. As soon as the switch is closed, the capacitor charges linearly as a function of time.

False

True or False: As a dry cell ages, its internal resistance goes up.

True

True or False: Four equal resistors connected in series have the same current and same voltage across each resistor.

True

True or False: Four unequal resistors connected in series have the same current but different voltages.

True

True or False: Kirchhoff's voltage rule is an example of conservation of energy.

True

True or False: The electromotive force of a battery is the maximum potential difference between the terminals of the battery.

True

When resistors are connected in series, a) the current flowing in each is the same. b) the potential difference across each is the same. c) the same power is dissipated in each one.

a) the current flowing in each is the same.

The potential difference between the terminals of a battery, when no current flows to an external circuit, is referred to as the

emf.

The potential difference between the terminals of a battery, when current flows to an external circuit, is referred to as the

terminal voltage.