much greater than that of a neutron.

A negatively charged ion has:

more electrons that protons.

fewer electrons than protons.

a complete outer electron shell.

an incomplete outer electron shell.

The outer-shell electrons of an atom:

are called valence electrons.

are set free most easily.

become free electrons once they are set free.

all of these

Electrons are held in their orbital path by:

centrifugal forces counterbalancing attraction forces.

centrifugal forces only.

attraction forces only.

unlike electrical forces.

Static electricity is:

the same as alternating current.

the same as direct current.

an electrical charge in motion.

an electrical charge at rest.

) When a hard rubber rod and a piece of fur are rubbed together, the fur gives up electrons to the rubber rod. As a result:

the fur and rod become positively charged.

the fur and rod become negatively charged.

the rod becomes positively charged.

the rod becomes negatively charged.

) When a hard rubber rod and a piece of fur are rubbed together, the fur gives up electrons to the rubber rod. As a result:

the fur and rod become positively charged.

A negatively charged ion has:

more electrons that protons.

The outer-shell electrons of an atom:

are called valence electrons.

are set free most easily.

become free electrons once they are set free.

all of these

Electrons are held in their orbital path by:

centrifugal forces counterbalancing attraction forces.

Static electricity is:

an electrical charge at rest.

When a hard rubber rod and a piece of fur are rubbed together, the fur gives up electrons to the rubber rod. As a result:

the rod becomes negatively the rod becomes negatively charged.

When a hard rubber rod and a piece of fur are rubbed together, the fur gives up electrons to the rubber rod. As a result:

the fur and rod become negatively charged.

the rod becomes positively charged.

the rod becomes negatively charged.

Current electricity:

is an electric charge in motion.

can be classified as being AC.

can be classified as being DC.

all of these

When an alternating current power source is connected to a circuit, it produces a current that:

changes in direction, but not in magnitude.

changes in magnitude, but not in direction.

does not change in magnitude or direction.

changes in both direction and magnitude.

In the battery, or voltaic cell, electrons are transferred from one electrode to the other. The electrode that gains electrons is:

the negative terminal.

the positive terminal.

the electrolyte.

both a and c

The force that causes the flow of electrons through a conductor is known as:

the power.

the current.

the voltage.

the resistance

The unit of measurement for the difference of potential between two points is:

the volt

the ampere.

the PD.

the ohm

In a basic electrical circuit, the part that stores other forms is: electric energy or changes it into

the rod becomes negatively charged.

Current electricity:

is an electric charge in motion.

When an alternating current power source is connected to a circuit, it produces a current that:When an alternating current power source is connected to a circuit, it produces a current that:

changes in both direction and magnitude.

In the battery, or voltaic cell, electrons are transferred from one electrode to the other. The electrode that gains electrons is:

the negative terminal.

The force that causes the flow of electrons through a conductor is known as:

the voltage.

The unit of measurement for the difference of potential between two points is:

the volt

In a basic electrical circuit, the part that stores other forms is: electric energy or changes it into

the load.

the source.

the conductor(s).

the switch.

A fuse is used to:

protect circuit wiring and equipment.

allow only currents within safe limits to flow.

automatically open the circuit when a higher current flows.

all of these.

If a circuit is constructed to allow the electrons to follow only one possible path, the circuit is called:

a series-parallel circuit.

an open circuit.

a series circuit

a parallel circuit.

Two switches are connected to control a lamp. A ____ can be used to show how the switches work the lamp.

truth table

wiring sequence chart

block diagram

all of these

Replacing a fuse with one of a higher current rating can cause:

lights in a house to flicker.

a short circuit.

wiring to overheat.

all of these

Technician A says that in a electrical circuit, voltage can exist without current. Technician B says that current cannot exist without voltage. Who is correct?

Technician A only

Technician B only

the load.

A fuse is used to:

all of these.

protect circuit wiring and equipment.

allow only currents within safe limits to flow.

automatically open the circuit when a higher current flows.

If a circuit is constructed to allow the electrons to follow only one possible path, the circuit is called:

a series circuit

Two switches are connected to control a lamp. A ____ can be used to show how the switches work the lamp.

truth table

Replacing a fuse with one of a higher current rating can cause:

wiring to overheat.

Technician A says that in a electrical circuit, voltage can exist without current. Technician B says that current cannot exist without voltage. Who is correct?exist without current. Technician B says that current cannot exist without voltage. Who is correct?

both Technician A and Technician B

neither Technician A nor Technician B

The polarity of the voltage drop across a resistor depends on:

its resistance value.

its position in the circuit.

the direction of current flow through it.

all of these

ATENTIE !!! CALCULAT DA 20A POTI FACE CONTESTATIE !!!

10 A

6 A

20 A

2 A

) The voltage across an open component in a parallel circuit is always equal to:

the source voltage

the dropped voltage.

the lowest circuit voltage.

zero.

Consider the circuit in Figure 2. The known voltages and currents are as indicated. Applying Kirchhoff's voltage and current laws, answer the following question. The value of the

applied voltage source would be:

both Technician A and Technician B

The polarity of the voltage drop across a resistor depends on:

the direction of current flow through it.

10 A

20 A

ATENTIE !!! CALCULAT DA 20A POTI FACE CONTESTATIE !!!

The voltage across an open component in a parallel circuit is always equal to:

the source voltage

applied voltage source would be: