You obtain a 100-W light bulb and a 50-W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct? a. Both bulbs glow at the same reduced brightness. b Both bulbs glow at the tame increased brightness c. The 100-W bulb glows more brightly than the 50-W bulb d. The 50-W bulb glows more brightly than the 100-W bulb

The 50-W bulb glows more brightly than the 100-W bulb

Explanation:

The bulb has a rating of 100 W under 110 V . So it will glow with full brightness when it is fed 110 V . When bulbs are in parallel combination , each bulb receives 110 V . So they glow with full brightness .

When they are in series combination , 110 supply voltage gets distributed between the , thus  , reducing the voltage appearing on each of them less than 110 V . So their brightness is reduced.

resistance = V

Bulb having high wattage rating has low resistance resulting in higher current . In the second case , both have same current as they are in series combination . So more heat will be generated in bulb having more resistance . Since 50 W bulb has higher resistance , it will glow brighter than 100 W bulb.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.