Skip to main content
Sedumjoy's user avatar
Sedumjoy's user avatar
Sedumjoy's user avatar
Sedumjoy
  • Member for 7 years, 5 months
  • Last seen more than a week ago
13 votes
5 answers
7k views

If electrons move slowly in an electrical circuit then what signal or energy is it that travels at the speed of light? [duplicate]

11 votes
4 answers
2k views

When a AM radio wave reaches the antenna does the signal need to be in a closed circuit to be amplified?

7 votes
3 answers
4k views

Are radio waves naturally polarized like light or is that a function of how they are produced?

6 votes
5 answers
1k views

Does an AM radio wave make use of a lower side band?

4 votes
1 answer
778 views

What determines the frequency of alternating current?

3 votes
1 answer
94 views

How does a diode control direction of current flow in a circuit containg a battery if current in the battery only flows from positive to negative? [closed]

2 votes
2 answers
102 views

Does the remote car door keyfob in today's automobiles change its code with every use?

2 votes
4 answers
647 views

Does the electric field travel mostly on the surface of the copper in a standard circuit?

2 votes
3 answers
2k views

In AM modulation how is an electrical signal mixed with the carrier wave?

2 votes
6 answers
2k views

Which is more efficient over 300 to 500 miles high voltage AC or high voltage DC?

1 vote
2 answers
203 views

In an AM radio do the electromagnetic waves cause the antenna to resonate to produce an alternating current?

1 vote
3 answers
6k views

What role does the capacitor play in an AM demodulating circuit? [closed]

1 vote
2 answers
170 views

What effect would a hydrogen bomb detonated at high enough altitude have on the power grid and solid state electronics?

1 vote
1 answer
2k views

Is the "Volt" a measure of force or energy consumption?

1 vote
1 answer
339 views

What does the mass term mean in the unit of inductance called the Henry?

1 vote
3 answers
370 views

How does a crystal radio headset act as a lowpass filter to remove the carrier wave.?

0 votes
2 answers
100 views

As a capacitor is charging in a circuit with a battery as the power source where is the source of electrons coming from? [duplicate]

0 votes
4 answers
2k views

How does a diode "rectify" an alternating electrical signal from an antenna in a diode type crystal radio?

0 votes
1 answer
158 views

In an AC or DC motor, what force is causing the armature to rotate?

0 votes
1 answer
70 views

Is the current that is on the surface of the area surrounding a current carrying wire in Ampere's Law the same as what flows in the wire?

0 votes
1 answer
130 views

How can an electric motor car have a turbo? [closed]

0 votes
3 answers
852 views

In amplitude modulation is the carrier wave multiplied by the radio signal wave to form the equation of the resultant wave to be transmitted?

0 votes
1 answer
520 views

What does it mean for a "baseband" signal to be a signal near zero frequency range?

-1 votes
2 answers
106 views

Does the needle of the galvanometer point in the direction the current is flowing?

-2 votes
1 answer
241 views

Can a vacuum tube Triode increase the voltage in a circuit above the voltage rating of the batteries in the circuit?

-3 votes
2 answers
79 views

Can an audion tube amplify a pulsating direct current or must the current be converted first to an alternating current? [closed]