Electrical Appliances Quiz

If an appliance needs 3kW in a domestic property, what is the fuse size?

• 12.5 amp

• 10 amp

• 15 amp

• 20 amp

In a domestic property, an appliance has a fuse size of 3 amp. What is the maximum power rating of the appliance?

• 720w or 0.72kW

• 500w or 0.5kW

• 1000w or 1kW

• 300w or 0.3kW

An appliance has a 5 amp fuse and needs 1.2kW of power. What is the voltage required?

• 240 volts

• 120 volts

• 300 volts

• 200 volts

Calculate the applied EMF when 2 amperes flows through a resistance of 40Ω. Use the formula V = I × R.

• 80 volts

• 60 volts

• 100 volts

• 50 volts

When an EMF of 50 volts is applied to a circuit, a current of 5 amperes flows. Calculate the resistance of the circuit.

• 10 ohms

• 5 ohms

• 15 ohms

• 20 ohms

What would be the resistance of a domestic appliance if the fuse size was 3 amp?

• 10 ohms

• 20 ohms

• 30 ohms

• 40 ohms

What is the fuse size for a domestic appliance which has 1,200 ohms resistance?

• 3A

• 5A

• 10A

• 13A

If an appliance had a fuse rated at 13 amp and the resistance was 32 ohms, what would the voltage be?

• 416 volts

• 320 volts

• 208 volts

• 104 volts

Calculate the current that will flow in the circuit shown below:

• 2A

• 1A

• 3A

• 0.5A