An electric fan of resistance 110 ohms is plugged into a potential difference of 220 V. How much current flows through the fan?

• $I$is thecurrent

• $V$is thepotential difference (voltage)

• $R$is theresistance

Substitute the values:

$$I = \frac{220 \, \text{V}}{110 \, \Omega} = 2 \, \text{A}$$​

Information Booster:

• Ohm's Lawis fundamental in understanding the relationship betweenvoltage,current, andresistance.

• Resistance (R)is measured inohms (Ω), andcurrent (I)is measured inamperes (A).

• The fan has a resistance of110 ohms, and a220 Vvoltage is applied across it, leading to a current of2 A.

Power Consumption:

• Thepowerconsumed by the fan can be calculated using$P=V\times I$.

• Substituting the values,$P=220\text{V}\times 2\text{A}=440\text{W}$, meaning the fan uses440 wattsof power.

Current Flow:

• Thecurrent (I)depends on both thevoltageandresistanceaccording toOhm's Law. Higher resistance results in lower current for the same voltage.