Answer : The resistance in the circuit is [tex]20\ \Omega[/tex]
Explanation :
The given data shows the resistance and the current flowing in the circuit.
Voltage, V = 6 V
Current flowing, I = 0.3 A
The ohms law gives the relationship between the current flowing, the voltage and the resistance in the circuit.
Mathematically, it is written as :
[tex]V=IR[/tex]
[tex]R=\dfrac{V}{I}[/tex]
[tex]R=\dfrac{6\ V}{0.3\ A}[/tex]
[tex]R=20\ \Omega[/tex]
So, the correct option is (D).
Hence, this is the required solution.