| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
A transistor to an electronic circuit is like a _______________ to a house?
safe |
|
driveway |
|
no trespassing sign |
|
gate |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor. A transistor acts as a gate or switch for electronic signals.
The valence shell of a conductor is how full of electrons?
half full |
|
full |
|
less than half full |
|
more than half full |
Conductors are elements that allow electrons to flow freely. Their valence shell is less than half full of electrons that are able to move easily from one atom to another.
From what energy do photovoltaic cells produce electrical energy?
sun |
|
chemical |
|
nuclear |
|
magnetic |
A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.
| 2100 V | |
| 1400 V | |
| 700 V | |
| 1050 V |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
V = \( I \times R \) = \( 10 \times 70 \) = 700 V
Inductance is a factor in which of the following?
determining energy stored by a capacitor |
|
an AC circuit |
|
batteries connected in serial |
|
a DC circuit |
Inductance is a property of an AC circuit (or a component in an AC circuit) that quantifies resistance to changes in current. The current in an AC circuit is continuously changing and inductive reactance (the opposition to change) depends both on the inductance of the circuit or component and the rate at which the current is changing.