Download App

Current Electricity — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
MCQ
Which type of a physical quantity is electric current?
  • A
    Scalar quantity
  • B
    Vector quantity
  • C
    Bipolar quantity
  • D
    Thermodynamic quantity
✓

Answer

  1. Scalar quantity

Explanation:

The electric current is a scalar quantity. Laws of ordinary algebra are used to add electric currents and the law of vector algebra are not applicable.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Current Electricity→Current Electricity — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

An AC source producing emf $\in=\in_{0}\Big[\cos\big(100\pi\text{s}^{-1}\big)\text{t}+\cos\big(500\pi\text{s}^{-1}\big)\text{t}\Big]$ is connected in series with a capacitor and a resistor. The steady-state current in the circuit is found to be $\text{i}=\text{i}_1\cos\Big[\big(100\pi\text{s}^{-1}\big)\text{t}+\phi_1\Big]+\text{i}_2\cos\Big[\big(500\pi\text{s}^{-1}\big)\text{t}+\phi_2\Big].$
  1. i1 > i2
  2. i1 = i2
  3. i1 < i2
  4. The information is insufficient to find the relation between i1 and i2
→

Point charges +4q, -q  and +4q  are kept on the x - axis at points x = 0, x = a  and x = 2a respectively, then

(a) Only q is in stable equilibrium

(b) None of the charges are in equilibrium

(c) All the charges are in unstable equilibrium

(d) All the charges are in stable equilibrium
→
The mass of the body is:
→

A metallic sheet is inserted between the plates of a parallel plate capacitor. The capacitance of the capacitor

(a) Increases

(b) Is independent of the position of the sheet

(c) Is maximum when the metal sheet in the middle

(d) a, b
→
The tangent at any point of  field line gives the direction of:
→
The energy band gap (distance between the conduction band and valence band) in conductor is.
→

An α -particle is accelerated through a potential difference of 200V. The increase in its kinetic energy is

(a) 100 eV

(b) 200 eV

(c) 400 eV

(d) 800 eV
→
In YDSE, the slit widths are in the ratio of 1:9. The ratio of intensity of the maxima to that of the minima is:
→
A listener is at rest with respect to the source of sound. A wind starts blowing along the line joining the source and the observer. Which of the following quantities do not change?
  1. Frequency.
  2. Velocity of sound.
  3. Wavelength.
  4. Time period.
→

A convex lens

(a) Converges light rays

(b) Diverges light rays

(c) Form real images always

(d) Always forms virtual images
→