hahdbehzhsHelo3244 hahdbehzhsHelo3244
  • 19-02-2020
  • Physics
contestada

A resistor has a potential difference of 16.5 V across it. It develops thermal energy at 340 W. What is the current across the resistor?

Respuesta :

Kazeemsodikisola
Kazeemsodikisola Kazeemsodikisola
  • 20-02-2020

Answer:

i=20.61apms

Explanation:

Power=340W

And a P.D=16.5V

Power in electric circuit is

P=iV

Therefore,

i=V/P

i=340/16.5

i=20.61amps

Answer Link
sammyayol2013 sammyayol2013
  • 20-02-2020

Answer:

The current across the resistor is 20.61A

Explanation:

The power P can be expressed as a function of the potential difference V using the equation;

P = IV

Where;

P = power

I = current

V = potential difference.

Making current I the subject of formula;

I = P/V

Given;

V = 16.5V

P = 340 W

Substituting the values;

I = 340W/16.5V

Current I = 20.61A

Answer Link

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