1. Yakub made an circuit as shown in the figure. He observed that the bulb did not glow but on
bringing a compass needle near it shows deflection.
He was quite confused that if current is flowing through the circuit then why the bulb is not
glowing. Meanwhile his friend Sourav arrived and suggested him to add one more cell in the
circuit. The bulb, then started glowing.
(a) Define a circuit.
(b) What does the deflection of a compass needle shows?
(c) Why the bulb did not glow in the first case but glow in the second case?
(d) What value of Sourav is shown here? *
2. Give reason 1. Why is there bleeding at the end of every menstrual cycle?
2. The gender of child is decided by the father *
Answers
Answer:
a) A circuit is a closed loop that electrons can travel in. A source of electricity, such as a battery, provides electrical energy in the circuit.
b) The deflection ofmagnetic needle shows that the solution is a good conductor.
c) Because the battery or cell may have got fuse.
d) intelligence
Explanation:
(a) Circuit is a closed path through which an electric current flows.
(b) Deflection of compass needle shows that the current is flowing in the circuit. It is magnetic effect of current.
(c) The current flowing through the circuit in
first case was too low to make the bulb glow but on adding a cell in the second
case makes the bulb glow.
(d) Sourav is an intelligent, helpful, analytical and with scientific aptitude.
*Please mark me as brainliest*