Question

What is the potential difference across 300ohm resistor when a current of 2.10 A flows through it?

Answer 1

R = V/I
300 = V/2.1
V= 630v

Answer 2

Do you not need to use 300* e-3 (2.1) ? It still states the problem is incorrect.

Answer 3

where u get this 300* e-3 (2.1), i don get it.

Answer 4

That is what it states in my book however when I tried answering it the way you showed me it was still incorrect.

Answer 5

what is the answer on ur book?

Answer 6

it didn't give us answer it just shows you how to set the equation which is V=IR

Answer 7

yeah v=IR
so V= 300 * 2.1, it suppose to be the right one i guess

Answer 8

It's still stating my answer is incorrect

Answer 9

it didn't give us answer it just shows you how to set the equation which is V=IR

Answer 10

That is what it states in my book however when I tried answering it the way you showed me it was still incorrect.

Answer 11

Do you not need to use 300* e-3 (2.1) ? It still states the problem is incorrect.

Answer 12

post the circuit diagram..

Answer 13

what is that e stand for?

Answer 14

@allenry ,if the circuit diagram has been given in your book then post it...

Answer 15

i guess this kind of question don show any diagram, maybe

Answer 16

In the problem you wrote here, you list the units on the resistor as being Ohm's. In this case,

V = 300 * 2.1 is valid and yields the correct answer.

However, you keep insisting that we should use 300 e-3 Ohms, which makes me think the resistor has units of 300 milliOhms.

Answer 17

@allenri if the resistance is in milliohm then V=300*e^-3*1.2 is absolutely right answer.