Question

The p.d. across a 30 resistor is 6V. What is the current flowing (in ampere)?

A. 0.2 A
B. 0.3 A
C. 0.4 A
D. 0.5 A

Answer 1

Using Ohm's Law (V = IR), in the given problem, the current flowing through a 30 ohm resistor with a potential difference of 6V is calculated to be 0.2 A, which matches option A.

Step-by-step explanation:

Finding the Current Using Ohm's Law

The problem given states that the p.d. (potential difference) across a 30 Ω (ohm) resistor is 6V (volts). To find the current flowing through the resistor, we apply Ohm's Law, which states that V = IR, where V is the voltage, I is the current, and R is the resistance. In this case, we want to solve for I, so we rearrange the formula to I = V/R.

Plugging in the given values:

V (voltage) = 6V

R (resistance) = 30 Ω

Thus:

I = 6V / 30 Ω = 0.2 A (ampere)

The current flowing through the resistor is 0.2 A, which corresponds to option A.