Current electricity Archives

11. The condition for the validity under Ohm’s law is that

Resistance must be uniform

Current should be proportional to the size of the resistance

Resistance must be wire wound type

Detailed SolutionThe condition for the validity under Ohm’s law is that

12. When electric current passes through a bucket full of water, lot of bubbling is observed. This suggests that the type of supply is

A.C.

None of the above

Join Our Telegram Channel

Subscribe on YouTube

type of supply is" class="read-more button" href="https://exam.pscnotes.com/mcq/when-electric-current-passes-through-a-bucket-full-of-water-lot-of-bubbling-is-observed-this-suggests-that-the-type-of-supply-is/#more-57741">Detailed Solution

13. Resistance of carbon filament lamp as the applied voltage increases.

Increases

Decreases

Remains same

None of the above

Join Our Telegram Channel

288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube

class="read-more button" href="https://exam.pscnotes.com/mcq/resistance-of-carbon-filament-lamp-as-the-applied-voltage-increases/#more-57549">Detailed Solution

14. Voltage dependent resistors are usually made from

Charcoal

Silicon carbide

Nichrome

Graphite

Join Our Telegram Channel

Subscribe on YouTube

button" href="https://exam.pscnotes.com/mcq/voltage-dependent-resistors-are-usually-made-from/#more-57528">Detailed Solution

15. Which is the best conductor of electricity?

Iron

Silver

Copper

Carbon

Join Our Telegram Channel

0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube href="https://exam.pscnotes.com/mcq/which-is-the-best-conductor-of-electricity/#more-56875">Detailed Solution

16. The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other?

18 ohms

36 ohms

48 ohms

64 ohms

Join Our Telegram Channel

branch is 18 ohms, what is the resistance of the other?" class="read-more button" href="https://exam.pscnotes.com/mcq/the-resistance-of-a-parallel-circuit-consisting-of-two-branches-is-12-ohms-if-the-resistance-of-one-branch-is-18-ohms-what-is-the-resistance-of-the-other/#more-56527">Detailed Solution

17. Conductance: mho ::

Resistance : ohm

Capacitance : Henry

Inductance : farad

lumen : steradian

Join Our Telegram Channel

11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube mho ::" class="read-more button" href="https://exam.pscnotes.com/mcq/conductance-mho/#more-56512">Detailed Solution

18. When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is

1 n-mho

106 mho

1 milli-mho

None of the above

Subscribe on YouTube

allows one micro ampere

Join Our Telegram Channel

current to flow through it. The conductance of the circuit is" class="read-more button" href="https://exam.pscnotes.com/mcq/when-a-voltage-of-one-volt-is-applied-a-circuit-allows-one-micro-ampere-current-to-flow-through-it-the-conductance-of-the-circuit-is/#more-56443">Detailed Solution

19. Which of the following material has nearly zero temperature coefficient of resistance?

Manganin

Porcelain

Carbon

Copper

Detailed SolutionWhich

of the following material has nearly zero temperature coefficient of resistance?

20. The hot resistance of the bulb’s filament is higher than its cold resistance because the temperature coefficient of the filament is

Zero

Negative

Positive

About 2 ohms per degree

Detailed

24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube

Solution

Page 1 Page 2 Page 3 Page 4 Page 5

Test 1 Test 2

Exit mobile version