Question

in which of the following circuits will the bulb glow brightest?
(a) A simple circuit with one bulb and one battery
(b) A simple circuit with one bulb and two batteries
(c) A simple circuit with two bulbs and one battery​

Answer 1

(A) Option :-

A simple circuit with one cell and one bulb

power =

R

V

2

=

R

V

2

(B) Option: A simple circuit with two cell a one bulb

power =

R

(2V)

2

=

R

4V

2

(C) Option: A simple circuit two bulbs and two cells

power =

R

(2V)

2

=

R

2V

2

(D) Option : A simple circuit with two bulbs and one cell

power =

2R

V

2

We see that in (B) option P is highest bulb will glow in (B) option.