What is the resistance (in Ω) of an electrical component if a current of 0.5A passes through it on application of 20V of potential difference across it?
- A10
- B80
- C20
- D40
Solution & Step-by-step Explanation
According to Ohm's Law, the relation between potential difference (V), current (I), and resistance (R) is given by:
V=I×R
Rearranging the formula to solve for resistance (R):
R=
I
V
Given:
Potential difference, V=20V
Current, I=0.5A
Substituting the values:
R=
0.5
20
=40Ω
Thus, the resistance of the electrical component is 40Ω.
V=I×R
Rearranging the formula to solve for resistance (R):
R=
I
V
Given:
Potential difference, V=20V
Current, I=0.5A
Substituting the values:
R=
0.5
20
=40Ω
Thus, the resistance of the electrical component is 40Ω.