modified 5 years ago

Why there is no decrease of voltage

00:48:00

Why there is no decrease in voltage across resistor

published 5 years ago

Robert_Kidd

5 years ago

Because the resistor and the voltmeter are directly across the supply. Try adding another resistor between the supply and the first resistor.

coachka

5 years ago

because the multimeter is in parallel with the resistor (it is the same one that was measuring the battery) the drop will happen with the component that is in series with it.

PrathikP

5 years ago

Actually, there is a decrease in voltage across the resistor. All resistors drop voltage when a current is passed through them.

PrathikP

5 years ago

If you go in the direction of current, you will see that the voltage decreases from 0V to -9.9V

fatcat2

5 years ago

Make a voltage divider by putting a 5.6k ohm series resistance and then measure the voltage.

Robert_Kidd

5 years ago

Which makes no difference in a simple circuit like this where the voltage is being measured across the resistor which is in parallel with the power supply.

fatcat2

5 years ago

Yup. R(out)>>>R(int.).........

kiani

5 years ago

@poturidinesh this is the technical reply...The voltage source on EC is perfect with zero internal source resistance.. Irf. Voltage sources have some series resistance. Ok!?

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