If the resistance of a wire is 10 ohms and the voltage across it is 20 volts, wh
Practice Questions
Q1
If the resistance of a wire is 10 ohms and the voltage across it is 20 volts, what is the current flowing through the wire?
2 A
5 A
10 A
20 A
Questions & Step-by-Step Solutions
If the resistance of a wire is 10 ohms and the voltage across it is 20 volts, what is the current flowing through the wire?
Step 1: Identify the values given in the problem. The resistance (R) is 10 ohms and the voltage (V) is 20 volts.
Step 2: Write down Ohm's Law formula, which is I = V / R. This formula helps us find the current (I).
Step 3: Substitute the values into the formula. Replace V with 20 volts and R with 10 ohms: I = 20 V / 10 Ω.
Step 4: Perform the division. Calculate 20 divided by 10, which equals 2.
Step 5: State the result. The current flowing through the wire is 2 amperes (A).
Ohm's Law – Ohm's Law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor.
