Question

please tell me the answer and I will make you as brainliest ​

Answer 1

Answer:

Okkkkkkkkkkkkkkkkkkkkkkkkkkkk

Answer 2

1.

$R = ρ \: \: \frac{l}{A}$

2. Tungsten has very high melting point. Due to continuous passage of electric current, the filament get very high amount of heat. So, to avoid the melting of filament, tungsten is used in it.

3. 10Ω

Five equal parts of 10Ω means one part have 10/5 = 2Ω. Now, all five are connected in series. So, 2+2+2+2+2 = 10Ω

4. SI unit of resistivity is Ωm (Ohm-metre).

5. (A) P and Q are true.

6. (A) All bulbs will not glow.

7. Kirchhoff's junction law states that the total current entering a junction is equal to the total current exiting that junction.

(This is also known as Kirchhoff's Current Law [KCL])

8. (i) Tungsten → (R) Metal

(ii) Nichrome → (P) Alloy

(iii) Germanium → (Q) Semiconductor