Question

What is the resistance of 1000W, 220V toaster?​

Answer 1

Answer:

48 ohms.

Explanation:

p=V²/R               P=VI   (I=V/R)

P=1000

V=220

R=?

R=V²/P=22O×220/1000

R=48.4 OHM

Answer 2

Given

• Power = 1000 W
• Voltage = 220 V

To Find

• Resistance

Solution

We know that

$\rm \longrightarrow R=\dfrac{V^{2}}{P}$

Here

• R = Resistance
• V = Voltage
• P = Power

Units

• R = Ohm (Ω)
• V = Volt (V)
• P = Watt (W)

According to the question

We are asked to find the resistance

Therefore

We must find "R"

Given that

• Power = 1000 W
• Voltage = 220 V

Hence

• P = 1000 W
• V = 220 V

Substituting the values

We get

$\rm \longrightarrow R=\dfrac{220^{2}}{1000} \ \Omega$

$\rm \longrightarrow R=\dfrac{220 \times 220}{1000} \ \Omega$

$\rm \longrightarrow R=\dfrac{48400}{1000} \ \Omega$

Therefore

$\rm \longrightarrow R=48.4 \ \Omega$

Hence

Resistance = 48.4 Ω