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3. Electrical fundamentals

What is the PD of a circuit which has a 40 mA current and a 1 kilohm resistance?

  • 40 V.
  • 400 V.
  • 4 V.

Explanation from PART66Online

Potential difference is found from Ohm's law: V = I x R = 0.040 A x 1000 ohms = 40 V. The conversions of 40 mA to 0.04 A and 1 kilohm to 1000 ohms are what make the figures combine cleanly.

K

kosala asked · 1 Jan 2012

What is the PD of a circuit which has a 40 mA current and a 1 kilohm resistancese

Community Comments (1)

P
PART66Online 1 Jan 2012
Hello.

V = I x R

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