When connected to the 220V mains supply, the current in a toaster, a kettle, a lamp and a fan is 5.2A, 9.4A, 0.5A and 2.6A respectively. Which appliance has the greatest electrical resistance?

toaster

No worries! We‘ve got your back. Try BYJU‘S free classes today!

kettlein

No worries! We‘ve got your back. Try BYJU‘S free classes today!

lamp

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

fan

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C lamp
Answer is C.
The electrical resistance of an electrical conductor is the opposition to the passage of an electric current through that conductor.
Therefore, a highly resistant body will allow only lesser amount of current to pass through it.
In this case, the current in a toaster, a kettle, a lamp and a fan is 5.2 A, 9.4 A, 0.5 A and 2.6 A respectively. So, the electrical appliance with the greatest resistance is the lamp as it allows only 0.5 A of current through it.

Suggest Corrections

Similar questions

Q. The table below shows the current in three different electrical appliances when connected to the 240 V mains supply:

Appliance	Current
Kettle	08.5 A
Lamp	0.4 A
Toaster	4.8 A

(a) Which appliance has the greatest electrical resistance? How does the data show this?
(b) The lamp is connected to the mains supply by using a thin, twin-cored cable consisting of live and natural wires. State two reasons why this cable should not be used for connecting the kettle to the mains supply.
(c) Calculate the power rating of the kettle when it is operated from the 240 V mains supply.
(d) A main takes the kettle abroad where the mains supply is 120 V. What is the current is the kettle when it is operated from the 120 V supply?

The table below shows the current in three different electrical appliances when connected to the 240 V mains supply :

Appliance current

Kettle 8.5 A

Lamp 0.4 A

Toaster 4.8 A

(a) Which appliance has the greatest electrical resistance ? How does the data show this ?

(b) The lamp is connected to the mains supply by using a thin, twin-cored cable consisting of live and neutral wires. State two reasons why this cable should not be used for connecting the kettle to the mains supply.

(d) A man takes the kettle abroad where the mains supply is 120 V. What is the current in the kettle when it is operated from the 120 V supply ?

Q. Two lamps one rated

60 W

220 V

and the other

40 W

220 V

are connected in parallel to a

220 V

electric supply mains. What is the total current drawn from the electric mains if the voltage of the electric supply is

220 V

An electrical appliance has a resistance of $25 Ω$ when this electrical appliance is connected to a 230 V supply line, the current passing through it will be:

Q. An electric iron draws a current of

4 A

when connected to a

220 V

mains. Its resistance must be:

Join BYJU'S Learning Program