Class 10.... electricity....physics....plss answer the all ques atleast 6,7 and 8....best answer will be marked BRAINLIEST..... spamming is not supported nd will be reported asap....
Answers
Answer:
6. If a device behaves in a way that is not described by ohm's law the resistance is not constant , but changes in a way that depends on the voltage across it . The device is said to be non ohmic .
Explanation:
I think it's help you
Explanation:
6.
Ohm’s law states that the electric current is proportional to the voltage and is inversely proportional to the resistance. The non-Ohmic conductor does not obey Ohm's law.The examples of non-Ohmic conductors are filament lamp,semiconductor devices like diodes,transistors,thyristors etc.
7.
Potential difference, V - V
= Work done/Charge = W/Q
V = 40V, V = 25V
Charge on 5 x 10 electrons, Q = charge on one electron x number of electrons = 1.6 x 10 x 5 x 10 = 8 coloumb
Therefore, the work done, W = (V - V ) x Q
= (40 - 25) x 8
= 120 J.
8.
Because nichrome has high melting point when compared to other resistive alloys. So consequently it has capability to withstand to high temperatures which are generally produced due to the inherent nature of resistors.
Hope it helps!