The voltage across a resistor is found to be 1.5 V. It is also found that there is a charge of 2 Coulombs passing through the resistor withi

Question

The voltage across a resistor is found to be 1.5 V. It is also found that there is a charge of 2 Coulombs passing through the resistor within 10 seconds. What is the value of the resistor in ohms

in progress 0
Thu Cúc 1 year 2021-09-05T16:11:16+00:00 1 Answers 6 views 0

Answers ( )

    0
    2021-09-05T16:12:30+00:00

    Answer:

    R = 7.5 Ω

    Explanation:

    • If the resistor is in the linear zone of operation, the resistance must obey Ohm’s Law:

            [tex]V = I*R (1)[/tex]

    • By definition, the current flowing through the resistor, is equal to the charge passing through the resistor, per unit time.
    • So, we can write the following expression for the current I:

            [tex]I =\frac{\Delta Q}{\Delta t} = \frac{2C}{10s} = 0.2 A (2)[/tex]

    • From (1) and (2) we can solve for R, as follows:

           [tex]R =\frac{V}{I} = \frac{1.5V}{0.2A} = 7.5 \Omega[/tex]

    • The value of the resistor is 7.5 Ω.

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )