An electric iron draws 5 amp , a TV set draws 3 amp and refrigerator draws 2 amp from a 220 volt main line. The three appliances are connected in parallel. If all the three are operating at the same time, the fuse used maybe of

A lamp can work on a 50 volt main taking 2 amps. What value of the resistance must be connected in series with it so that it can be operated from 200 volt mains giving the same power.

An electric iron draws a current of 3.4A from the 220V supply line. What current will this electric iron draw when connected to 110 V supply line?

Three resistors of 2 Omega , 3 Omega and 4 Omega are connected in parallel. Draw the arrangement and find the equivalent resistance in each case.

An electric lamp of 100 Omega , a toaster of resistance 500 Omega , and a water filter of resistance 500 Ω are connected in parallel to a 220 V source. What is the resistance of an electric iron connected to the same source that takes as much current as all three appliances, and what is the current through it?

A resistor has a resistance of 176 ohms. How many of these resistors should be connected in parallel so that their combination draws a current of 5 amperes from a 220 volt supply line?

An electric kettle rated as 1200 W at 220 V and a toaster rated at 1000 W at 220 V are both connected in parallel to a source of 220 V. If the fuse connected to the source blows when the current exceeds. 9.0 A, can both appliances be used at the same time ? Illustrate your answer with calculations.