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mojhsa [17]
2 years ago
15

A 30 resistor is connected in series with another resistor and a 6. 0V battery. The current in th

Physics
1 answer:
Setler79 [48]2 years ago
6 0

Hi there!

We can begin by calculating the voltage drop across the 30 Ω resistor using the equation:

V = IR
V = Potential Difference (V)

I = Current (A)

R = Resistance (Ω)

Calculate the voltage. Recall that the current is CONSTANT across a series circuit.


V = 0.12 × 30 = 3.6 V

Voltage ADDS UP in a series, so:

Total V = V1 + V2

6 = 3.6 + V2

<u>V2 = 2.4V. The correct answer is A.</u>

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Why is the metric system used globally, but we use the US customary units?
tatuchka [14]

Answer:

The biggest reasons the U.S. hasn't adopted the metric system are simply time and money. When the Industrial Revolution began in the country, expensive manufacturing plants became a main source of American jobs and consumer products.

Explanation:

8 0
3 years ago
A 2.1 cm length of tungsten filament in a small lightbulb has a resistance of 0.067 ω. find its diameter. the resistivity of the
kkurt [141]
The resistance of an ohmic material is given by 
R= \frac{ \rho l}{a}
where l is the length and a is the cross sectional area.  For a circular wire, this area is that of a circle:
R=  \frac{\rho l}{ {d^2} } \frac{4}{\pi}=\frac{5.6\times10^-8 \times0.021m\times4}{\pi d^2}   = \frac{1.497\times 10^-9}{d^2}
Then solving for diameter, d:
d^2=\frac{1.497\times 10^-9}{0.067}=2.235\times10^-8
d=0.1495mm
3 0
4 years ago
Calculate the total resistance in a parallel circuit made up of resistances of 2, 3, and 4.
Tamiku [17]

Answer:

<em><u>0</u></em><em><u>.</u></em><em><u>9</u></em><em><u>1</u></em>

Explanation:

as equivalence resistance can be found out using the

1/Req = 1/r1 +1/r2 +1/r3......

now, 1/req= 1/2+1/3+1/4

=6/12+4/12+3/12

=13/12

i.e, req =12/13 =0.91

✌️:)

5 0
4 years ago
If your speed slows down you will have what acceleration?
vitfil [10]
When speed slows down you have kinetic energy.
8 0
4 years ago
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If you travel 40 miles east and then turn around and drive 12 miles west, the displacement is?
AVprozaik [17]
To find how far east we drove (This is the displacement), we simple subtract 12 from 40.
An easy way to do this in your head is to round 12 down to 10, subtract 10 from 40, then subtract the remaining 2. This should result in an answer showing that you drove 28 miles east.
6 0
3 years ago
Read 2 more answers
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