Electric Curren...

What happens when the electromagnet pulls the iron strip in an electric bell?

There is a _______ limit on the current which can safely flow through a ________

Which of the following is the reason for overflow of current in circuits?

When is the circuit complete of an electric bell?

Which of the following is not a function of a fuse?

Take an electric cell, a bulb, a switch and connecting wires. Make an electric circuit as shown in this figure above. This activity has to be done using only one cell. Keep the switch in the OFF position and touch the bulb. What do you feel?

Make a circuit as shown in the figure above. Take about $$10\ cm$$ long piece of nichrome wire and tie it between the nails. (You can get nichrome wire from an electric repair shop or you can use a piece of a discarded coil of an electric heater.) Touch the wire. Now switch on the current in the circuit by moving the switch to the ‘ON’ position. After a few seconds touch the wire. What difference do you observe?

Consider $$A$$ & $$B$$, which of these demonstrates heating effects of electric current?

Take an electric cell, a bulb, a switch, and connecting wires. Make an electric circuit as shown in the figure above. This activity has to be done using only one cell. Move the electric switch to the ‘ON’ position and let the bulb glow for a minute or so. Touch the bulb. What do you feel?

Look at the circuit diagram above and choose the correct option.