Download App

Moving Charges and Magnetism — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsMoving Charges and Magnetism1 Mark
MCQ
Quantity that is not affected by magnetic field is:
  • A
    Moving charge
  • B
    Change in magnetic flux
  • C
    Current flowing in conductor
  • D
    Stationary charge
✓

Answer

  1. Stationary charge

Explanation:

Magnetic field is the magnetic effect of electric currents andmagnetic materials.

The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is represented by a vector field.

As magnetic field has both magnitude as well as direction so it is a vector quantity.When charges are stationary, their electric fields do not affect magnets.

But, when charges move, they produce magnetic fields that exert forces on other magnets.

When there is relative motion, a connection between electric and magnetic fields emerges—each affects the other.

Quantity that is not affected by magnetic field is Stationary charge.

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 [1M]" from Moving Charges and Magnetism→Moving Charges and Magnetism — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

The specific resistance of a rod of copper as compared to that of thin wire of copper is:
→
The capacitor of an oscillatory circuit of negligible resistance is enclosed in a evacuated container. The frequency of the circuit is 150 kHZ and when the container is filled with a gas, the frequency changes by 100 HZ. The dielectric constant of the gas.
→

A capacitor is connected to a cell of emf E having some internal resistance r. The potential difference across the

(a) Cell is < E

(b) Cell is E

(c) Capacitor is > E

(d) Capacitor is < E
→

The thermo e.m.f. of a thermo-couple is 25μV/℃  at room temperature. A galvanometer of 40 ohm resistance, capable of detecting current as low as ,  is connected with the thermocouple. The smallest temperature difference that can be detected by this system is

(a) 20 ℃

(b) 16 ℃

(c) 12 ℃

(d) 8℃  
→

Red light is used as danger signal because it is:

→
The graph of ln$\Big(\frac{\text{R}}{\text{R}_{\text{0}}}\Big)$ versus In A (R = radius of a nucleus and A - its mass number) is:
  1. A straight line.
  2. A parabola.
  3. An ellipse.
  4. None of them.
→
When stopping potential is applied in an experiment on photoelectric effect, no photocurrent is observed. This means that:
  1. The emission of photoelectrons is stopped.
  2. The photoelectrons are emitted but are reabsorbed by the emitter metal.
  3. The photoelectrons are accumulated near the collector plate.
  4. The photoelectrons are dispersed from the sides of the apparatus.
→

The internal resistance of a cell of e.m.f. 12V is 5 . It is connected across an unknown resistance. Voltage across the cell, when a current of 60 A is drawn from it, is

(a) 15 V

(b) 12 V

(c) 9 V

(d) 6 V
→
The photoelectric effect proves that light consists of :
→
A positively charged particle moving in east direction enters a region of uniform magnetic field directed vertically upwards. What will be the path of the particle?
→