Unit 1-4 Lesson 14

In order to measure current, the ? must be placed in series with the component for which the current is to be measured. Select one: a. ammeter b. ohmmeter c. voltmeter d. wattmeter

ammeter

The ? is the same at any point of a series circuit. Select one: a. current b. resistance c. voltage d. wattage

current

An increase in the total resistance of a circuit would cause an increase in the current in that circuit. T/F

false

Decreasing the applied voltage to a circuit would cause the current to increase. T/F

false

If the resistance in a circuit is doubled, the current would also be doubled. T/F

false

In a DC circuit, the current is inversely proportional to the voltage, and directly proportional to the resistance. T/F

false

When measuring current in a circuit, the meter should always be set on the lowest current scale before performing the measurement. T/F

false

Ohm's Law states that it takes one volt to push one ampere through one ? . Select one: a. farad b. henry c. ohm d. watt

ohm

The total amount of resistance to current flow in a series circuit is equal to the sum of the ? in that circuit. Select one: a. current b. resistance c. voltage d. wattage

resistance

A two-lead variable resistor used to adjust current in a circuit is called a ? . Select one: a. bi-metallic switch b. potentiometer c. regulator d. rheostat

rheostat

A circuit having only one current path is called a(n) ? circuit. Select one: a. capacitive b. inductive c. parallel d. series

series

In order to solve for total current in a series circuit using Ohm's Law, the ? the circuit must be known. Select one: a. individual resistor values in b. individual voltage drops in c. total power consumed by d. total voltage and total resistance of

total voltage and total resistance of

A fuse is a safety device placed in a circuit to limit the amount of current that can flow in the circuit. T/F

true

A variable resistor wired as a potentiometer has three leads. T/F

true

In a series circuit, the total current is equal to the total voltage divided by the total resistance. T/F

true

Since there is only one current path through a series circuit, the same current must flow through every component. T/F

true

Subscripts allow precise communication about various components of a circuit. T/F

true

The basic Ohm's Law algebraic formula for current is: I=E/R , T/F

true

When the current level is continuously changing in a circuit, an analog meter should be used. T/F

true