Question

When 12 volt battery is connected across unknown resister there is a current of 3 M is the circuit find the value of resistance of the resistor

Answer 1

Potential difference of the battery = 12 Volts

Current through the resistors (I) = 3 Ampere

Let the resistor be R.

Now, According to ohm's law, the current is directly proportional to the voltage applied.

Hence,

V = IR

$R = \frac{V}{I}$

$R = \frac{12}{3}$

R = 4 Ω or 4 ohms

Hence, the resistance is equal to 4 Ω

Answer 2

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According to Ohm’s law,

V = IR

=v/I

Here, V = 12 V and I = 3 mA = 0.003 A Therefore,

=12/ 0.003 = 4000 Ω = 4 kΩ

I hope, this will help you___❤❤

Thank you

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