Chapter 12 Electricity – Page 2 – HI MCQ!

Heat produced in a current carrying wire in 5s is 60J. The same current is passed through another wire of half the resistance. The heat produced in 5s will be?

Mark as favorite

The work done in moving a unit positive charge across two points in an electric circuit is a measure of?

Mark as favorite

Electrical resistivity of a given metallic wire depends upon?

Mark as favorite

Which of the following gases are filled in electric bulbs?

Mark as favorite

Which of the following statement is or are correct?

Mark as favorite

The simplest way to maintain a potential difference between the two ends of a conductor is to connect the conductor between the terminals of a cell or battery.
The electric current is a flow of electrons in a metal wire or conductor when a battery is applied across its ends.
Circuit is a continuous conducting path consisting of wires and switch between two terminals of a cell along which an electric current flow.
All the above

The heating element of an electric iron is made up of?

Mark as favorite

When electric current is passed, electrons move from?

Mark as favorite

A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of?

Mark as favorite

The resistance of hot filament of the bulb is about 10 times the cold resistance. What will be the resistance of 100 W-220 V lamp, when not in use?

Mark as favorite

If R1 and R2 be the resistance of the filament of 40 W and 60 W respectively operating 220 V, then?

Mark as favorite