Physics Quiz: Current Electricity Trivia Questions!

10 Questions | By Padasalaiphysics | Updated: Mar 20, 2022 | Attempts: 5857

Questions

Settings

Create your own Quiz

Physics Quiz: Current Electricity Trivia Questions! - Quiz

Questions and Answers

1.

Charge of 60 C passes through an electric lamp in 2 minutes. Then the current in the lamp is
- A.
  
  0.5 A
- B.
  
  30 A
- C.
  
  1 A
- D.
  
  5A
2.

The material through which electric charge can flow easily is
- A.
  
  Copper
- B.
  
  Germanium
- C.
  
  Quartz
- D.
  
  Mica
3.

The current flowing in a conductor is proportional to
- A.
  
  Drift velocity
- B.
  
  1/ area of cross section
- C.
  
  1/no of electrons
- D.
  
  Square of area of cross section.
4.

A toaster operating at 240V has a resistance of 120Ω. The power is
- A.
  
  480 W
- B.
  
  400 W
- C.
  
  2 W
- D.
  
  240 W
5.

If the length of a copper wire has a certain resistance R, then on doubling the length its specific resistance
- A.
  
  Will remain the same
- B.
  
  Will be doubled
- C.
  
  Will become 1/4 th
- D.
  
  Will become 4 times
6.

When two 2Ω resistances are in parallel, the effective resistance is
- A.
  
  1 Ω
- B.
  
  2 Ω
- C.
  
  0.5 Ω
- D.
  
  4 Ω
7.

In the case of insulators, as the temperature decreases, resistivity
- A.
  
  Increases
- B.
  
  Becomes zero
- C.
  
  Decreases
- D.
  
  Remains constant
8.

If the resistance of a coil is 2 Ω at and α = 0.004 /, then its resistance at is
- A.
  
  2.8 Ω
- B.
  
  0 Ω
- C.
  
  1.4 Ω
- D.
  
  4 Ω
9.

According to Faraday’s law of electrolysis, when a current is passed, the mass of ions deposited at the cathode is independent of
- A.
  
  Resistance
- B.
  
  Time
- C.
  
  Charge
- D.
  
  Current
10.

When n resistors of equal resistances (R) are connected in series, the effective resistance is
- A.
  
  NR
- B.
  
  1/nR
- C.
  
  R/n
- D.
  
  N/R