Question

What is the resistor value in the given circuit ?
*
26 V
13 mA
R
(α) 200 Ω
(6) 1 kΩ
(c) 2 ΚΩ
(d) 4 ΚΩ​

Answer 1

Explanation:

Option C26V, 13mA, R(resister) are connected in series,

According to Ohm's law, V = I.R

=> 26V = 13mA.R

=> R = 26V/13mA

= 2 K Ohms.

Answer 2

Given:

The potential difference or the voltage in the circuit= 26 volts

The current flowing through the circuit = 13 milliamperes

To find:

The resistance or resistor value in the circuit =?

Solution:

• The resistance of the given circuit can be found by the equation of Ohm's Law.
• The unit for expressing resistance is Ohms given by the symbol "Ω".

   => Resistance in a circuit (R) = Potential difference (V) ÷ Current in a circuit (I)

  => Resistance in circuit (Ω) = P.D. (V) ÷ I (A)

   => Resistenace in circuit (Ohms) = $\frac{26 Volts}{0.013 Ampere}$

   => Resistance in circuit (Ohms) =$\frac{26 * 1000 }{13}$ (∵ current is given in milliamperes)

   => Resistance in circuit (Ohms) = 2000 Ω

Hence, the resistor value in the given circuit is 2000 Ω or 2 KΩ (option c).