Question

@.Sam.

Answer 1

I'm not sure how to figure this one out
27 coulombs of charge flows through a hair dryer every 3.0 seconds. What is the current flow?
9 A
0.11 A
81 A
5 A
Would I divide?

Answer 2

I got 9A

Answer 3

Correct!

Answer 4

A current with 12 amps flows from a hair drier for 3.0 seconds from a 120 Volt source. What is the resistance of the hair drier?

10 ohm

0.1 ohm


4 ohm<<<<<?


5 ohm

Answer 5

Use Ohm's law.
\(V=IR\)

Answer 6

So 10?

Answer 7

You don't have to consider about time. Yes it is. :)

Answer 8

A current with 12 amps flows from a hair drier for 3.0 seconds from a 120 Volt source. What is the power of the hair drier?

1440 W

10 W

144 W

0.1 W
Would I use v^2? Or something like that?

Answer 9

\(Power=IV\)

Answer 10

It's A right?
A 10 ohms, 22 ohms, and 100 ohms resistor are hooked in series. What is the total resistance?

6.5 ohms

132 ohms

0.16 ohms

132 volts
Sorry about asking alot lol. I'm doing this right before class in college lol. I ask for forgivenesss. Not a physics geek lol. Srry

Answer 11

For resistors in series,
\(R_T = R_1+R_2+\ldots\)

For resistors in parallel,
\(\Large\frac{1}{R_T}\normalsize=\Large\frac{1}{R_1}\normalsize+\Large\frac{1}{R_2}\normalsize+\ldots\)

Answer 12

Previous one is correct.

Answer 13

So how exactly would I work this one out??

Answer 14

Since the resistors are in series you add them up.

Answer 15

Oh okay.
A 10 ohms, 22 ohms, and 100 ohms resistor are hooked in parallel. What is the total resistance?

0.155 ohms
132 ohms
6.4 ohms
132 volts
What about if they are in parallel?

Answer 16

Use the other equation I gave.

Answer 17

Adding?

Answer 18

\(\Large\frac{1}{R_T}\normalsize=\Large\frac{1}{R_1}\normalsize+\Large\frac{1}{R_2}\normalsize+\ldots\)

Answer 19

Would the units be volts for this one?

Answer 20

Or ohms?

Answer 21

Unit of resistance is ohms.

Answer 22

2122?

Answer 23

This is the correct simplified equation,
\(\Large\frac{1}{R_T}\normalsize=\Large\frac{1}{R_1}\normalsize+\Large\frac{1}{R_2}\normalsize+\Large\frac{1}{R_3}\)

\(R_T=\Large\frac{R_2R_3+R_1R_3+R_1R_2}{R_1+R_2+R_3}\)