Rad135 Ch3 Electricity Question Preview (ID: 55287)


This Content Covers Chapter 3 (Electricity) From The Text To Help You Prepare For The Midterm Exam In Rad135. TEACHERS: click here for quick copy question ID numbers.

When electrified, one object has more electrons than another, that object also has ____ negative charges.
a) more
b) less
c) equal
d) unchanged

What form of electrification happens when two objects touch, allowing electrons to move from one to the other?
a) movement
b) induction
c) contact
d) friction

What is the total resistance in a circuit with a 2 ohm, a 4 ohm and a 6 ohm resistors in parallel?
a) 12 ohms
b) 12 amps
c) 1.09 ohms
d) 0.92 ohms

Electricity concerns the distribution and movement of _____.
a) protons
b) electrons
c) photons
d) nuetrons

Which of the following is NOT true regarding protons?
a) smallest unit of positive charge in an atom
b) tightly bound within the nucleus
c) loosley bound in the outer shell of an atom
d) equal to the z number of the element

An electrical device that is designed to store charge momentarily after charging is a(n): ____.
a) battery
b) capacitor
c) diode
d) stator

What is the process of electrostatic fields acting on one another without contact called?
a) movement
b) induction
c) friction
d) contact

Given 3 light bulbs in a parallel circuit and then the same light bulbs in a series circuit, which of the following is true?
a) The total resistance of the parallel circuit will be greater than that of the series circuit.
b) The ammeter will read the same anywhere in the parallel circuit.
c) The lights will glow brighter in the parallel circuit.
d) A voltmeter can be connected in series in either circuit to measure potential difference.

In a parallel circuit: ____.
a) Ohm's law does not apply
b) total current flow is equal across its parallel branches
c) as more resistors are added, total resistance is unaffected
d) the voltage is equal across all branches of the circuit

One hertz (Hz) is equal to: ____.
a) 1 cycle per second
b) 50 cycles per second
c) 60 cycles per second
d) 220 cycles per second

A 100 watt lightbulb with an amperage of 0.91 A is operating at a potential difference of:
a) 100 V
b) 110 V
c) 110 kV
d) 110 ohms

What is the total resistance in a series circuit with 3 resistors with 3, 6 and 9 ohms?
a) 18/11 ohms
b) 18 ohms
c) 18 volts
d) 18 amps

When opposite charged objects are close in proximity, the electrons may jump the gap to form ____.
a) friction
b) ionic solutions
c) electric fields
d) static discharge

What law describes the relationship between current, potential difference, and resistance that applies to all resistance circuits?
a) inverse square law
b) Ohm's law
c) law of electrostatics
d) law of conversion

What is used to explain the presence of an electron flow?
a) voltage
b) current
c) ohm
d) impedance

Which term is used to describe the force or strength behind the electron flow?
a) law of conservation
b) law of electrostatics
c) potential difference
d) Ohm's law

Which of the following is considered to be a superconductor?
a) copper
b) glass
c) silicon
d) titanium

What part in the laws of electrostatics states that charges reside on the external surfaces of conductors and evenly throughout nonconductors?
a) distribution
b) inverse square law
c) repulsion-attraction
d) movement

What material resists the flow of electrons?
a) superconductor
b) insulator
c) conductor
d) semi-conductor

Which is NOT a law of electrostatics?
a) replusion-attraction
b) inverse-square law
c) ionization
d) distribution

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