Question

when a 4 volt battery is connected across an unknown resistor there is a current of 100 ampere in a circuit the value of the resistance of the resistor is​

Answer 1

Answer:

option( b ) 40 ohm .....

Answer 2

Answer:

R = 40 ohms

Explanation:

It is given that,

Current in the circuit, $I=100\ mA=100\times 10^{-3}\ A=0.1\ A$

Voltage of the battery, V = 4 volts

Let R is the resistance of the unknown resistor. It can be calculated using Ohm's law as :

$V=IR$

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

$R=\dfrac{4\ V}{0.1\ A}$

R = 40 ohms

So, the resistance of the unknown resistor is 40 ohms. Hence, this is the required solution.