NEED HELP A 400 Ω resistor is connected across 200 V. What current will flow?Single choice. (2 Points) 0.25 A

Question

NEED HELP A 400 Ω resistor is connected across 200 V. What current will flow?Single choice.
(2 Points)

0.25 A

0.5 A

2.0 A

4.0 A

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Hải Đăng 4 years 2021-08-11T12:04:09+00:00 1 Answers 14 views 0

Answers ( )

  1. MichaelMet
    0
    2021-08-11T12:06:07+00:00
    Reply

    Answer: 0.5A

    Explanation:

    According to Ohm’s law, the Voltage(V) when a current flows through a resistor can be calculated by using the formula:

    V = IR

    where,

    V = Voltage = 200V

    I = current in amps (A)

    R = resistance in ohms (Ω) = 400Ω

    Current = Voltage / Resistance

    I = V/R

    I = 200/400

    I = 0.5A

    Therefore, the current is 0.5 Ampere

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