Question

When a 12V battery is connected to resistor, 2.5mA current flows through the circuit. If so what is the resistance of the resistor?

Answer 1

Value of resistance of resistor is 3600 Ω

Explanation:

Given,

Battery = Potential difference= 12 V

Current = 2.5 m A = 2.5 * 10⁻³ A

According to Ohm's law

Potential is directly proportional to the current flowing through the circuit

V = IR

where R is resistance

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

=> R= $\frac{12}{2.5 *10^{-3} }$

=> R = $\frac{12*10^{4} }{25}$

=> R = 3600 Ω

or R = 3.6 k Ω

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Answer 2

Answer:

R=V/I

R=12/2.5

=4.8 ohm