BARU
Ukuran huruf
Lembar kerja2.03 Electric Current & Circutis
Total soal: 20
Worksheet time: 12mins
An IPod uses a standard 1.5 V battery. How much resistance is in the circuit if it uses a current of 0.01A?
0.015 Ω
150 Ω
1.5 Ω
None of the above
A 12 Volt car battery pushes charge through the headlight circuit resistance of 10 ohms. How much current is passing through the circuit?
120 A
1.2 A
12 A
None of the above
An electric heater works by passing a current of 100 A though a coiled metal wire, making it red hot. If the resistance of the wire is 1.1 ohms, what voltage must be applied to it?
110 V
1.1 V
11 V
None of the above
Electric current is the flow of which of the following through a wire?
Electrons
Protons
Neutrons
Protons and Electrons
Electrical potential that drives a charge is known as which of the following?
Circuit
Voltage
Flow
Resistance
Which of the following correctly describes voltage difference?
The push that causes charges to move
Causes charges not to move
Flows from low areas to high areas
Flows from high to low areas
Which of the following is the flow of electrons through a wire or a conductor?
Electric Current
Voltage
Watts
Electrical pressure
Which of the following are voltage sources?
Ohm's Law
resistance
electric charge
batteries and wall sockets
Voltage sources are used to sustain
the flow of protons
chemical reactions
resistance
the movement of electric charge
Which of the following creates a voltage difference?
battery
amperes
charge
resistance
Which of the following describes the measure of the flow of electrical charge?
watts
volts
Ohms
amperes
Which of the following describes how electrical current flows?
from low voltage to high voltage
from the detector to the source
from high voltage to low voltage
from the detector to the next detector
Which of the following is a material that allows electrons to move easily through it?
electric charge
static electricity
conductor
insulator
Static discharge differs from electric current because static discharge is described by which of the following?
involves the movement of ions as well as electrons
results because a force is exerted on electrons
lasts for only a fraction of a second
is the flow of electrons
A closed conducting loop through which an electrical current can flow is which of the following?
resistance
circuit
voltage
electrical pressure
Which of the following describes resistance?
completely stops electron flow
impedes the flow of electrons
is an insulator
has to do with the voltage in the circuit
Which of the following choices best describes how electrons are transferred from one object to another?
There are extra electrons in the air that are transferred from one object to another
Electrons are transferred when objects come into direct contact with each other
Electrons are transferred when one object creates electrons and another object destroys them.
Electrons are not transferred between objects.
According to Ohm's law, as resistance increases which of the following would the current do?
increases
varies
stays the same
decreases
An electron has what type of electrical charge?
positive
negative
neutral
varies
1. Which subatomic particle has a positive charge?
all of them
neutron
electron
proton
