Question

An electrical appliance has a resistance of 20Ω. When this electrical appliance is connected to a 230V supply line, the current passing through it will be: a.11.5A b. 11A c. 1.15A d. 0.115A​

Answer 1

Answer:

a. 11.5 A

Explanation:

We have,

• Resistance (R) = 20Ω
• Voltage (V) = 230 V

To find,

• Current (I)

Solution,

Using Ohm's law (V = IR):

=> 230 = I(20)

=> I = 230/20

=> I = 23/2

∴ I = 11.5 A

Verification,

=> V = IR

>> 230 = 11.5(20)

>> 230 = 230

∴ L.H.S = R.H.S