Electricity Tes...

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:

Two electric bulbs have resistances in the ratio 1:2. If they are joined in series, the energy consumed in them is in the ratio.

You are given four ammeters A, B, C and D having least counts mentioned below: (I) Ammeter A with least count 0.25 A (II) Ammeter B with least count 0.5 A (III) Ammeter C with least count 0.05 A (IV) Ammeter D with least count 0.1 A Which of the ammeters would you prefer for doing an experiment to determine the equivalent resistance of two resistances most accurately, when connected in parallel?

If the current flowing through a fixed resistor is halved, the heat produced in it will become:

Two bulbs marked 200 watt-250 volts and 100 watt-250 volts are joined in series to 250 volts supply. Power consumed in circuit is

What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 C?

When a current 'I' flows through a resistance 'R' for time 't' the electrical energy spent is given by

A wire of resistance R1 is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R2, then the ratio R1/ R2 is:

At a given time, a house is supplied with 100 A at 220 V. how many 75 W, 220 V light bulbs could be switched on in the house at the same time (if they are all connected in parallel)?