Delhi Police Constable Exam Model Paper 6

Answer : (1) - Ohm
CONCEPT:
● Electrical Resistance: The property of any conductor that opposes the flow of electric current through it is called resistance.
∘ It is denoted by R and the SI unit is the ohm (Ω).
The resistance is given by:
R = ρ $\frac{1}{\mathit{A}}$
Where ρ is resistivity, L is the length and A is the area of the cross-section.
EXPLANATION:
● The SI unit of electrical resistance is Ohm (Ω) and it is the SI derived unit of electrical resistance, named after German physicist, Georg Simon Ohm.