Q1.Which of the following electrical appliances is explicitly mentioned as utilizing the heating effect of electric current by having an element inside it?

Q2.In electric heaters and similar appliances, what is the coil of wire that gets hot when current passes through it known as?

Q3.According to the caution provided in the text, what is the consequence of keeping the switch in the 'ON' position for a long time in an electric circuit with a cell?

Q4.From which source can nichrome wire be obtained for an electric circuit activity, as suggested in the text?

Q5.Which of the following is NOT listed among the electrical appliances that have elements inside them, as per the provided text?

Q6.What is the main drawback of incandescent electric bulbs, making them less electricity efficient?

Q7.According to the text (Reprint 2024-25), which lighting source is considered the most electricity efficient for producing a given intensity of light?

Q8.Which toxic substance is present in fluorescent tube-lights and CFLs, necessitating their safe disposal?

Q9.Which organization assigns the 'ISI mark' on products in India, assuring conformity to specifications?

Q10.What does the 'ISI mark' on products signify, as per the provided text?