Draw a diagram of magnetic field lines due to any current carrying circular loop.
Question types
Moving Charges and Magnetism question types
123 questions across 6 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.
123
Questions
6
Question groups
5
Question types
01
2 Marks Questions
25 Q→023 Marks Question
5 Q→031 Marks Question
45 Q→044 Marks Questions
1 Q→05M.C.Q (1 Marks)
30 Q→065 Marks Questions
17 Q→Sample Questions
Moving Charges and Magnetism questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
View full solution →
Radii of two circular current carrying coils are $r_1$ and $r_2$ respectively and number of turns in them are $n_1$ and $n_2$ respectively. They are joined in series. Prove that the ratio of produced magnetic fields at their centers is $n_1 r_2: n_2 r_1$. If coils are joined in parallel, then the ratio of magnetic fields produced at the centers is equivalent to $\left(r_2 / r_1\right)^2$.
View full solution →Resistance of a galvanometer is $30 \Omega$. A current of 2 mA gives full scale deflection in it. Calculate the necessary resistance required to make it an ammeter of range $(0-0.3 A)$.
View full solution →In a solenoid, there are 500 turns/meter and current flowing in it is 5 A . Length of the solenoid is 0.5 m and its radius is 1 cm . Calculate the intensity of magnetic field inside the solenoid.
Current of 0.5 A is flowing through a circular loop of radius 5 cm . Calculate the magnetic field at the center of the loop.
"Write ampere's circuital law. In a long straight wire of cross-sectional cut (radius a), a direct current is flowing in the wire. Current is uniformly distributed in the wire. Calculate the magnetic field in inner surface of the wire ( $r
View full solution →Current of 4 A is flowing in a straight wire AB. A proton $P$ is travelling parallel to the wire in the opposite direction of current with a speed of $4 \times 10^6$ $m / s$ at a distance of 0.2 m from the wire as shown in the diagram. Calculate the magnitude of force applied on the proton and also tells its direction.
View full solution →Two long parallel wires are 8 cm apart. Currents of magnitudes $i$ and $3 i$ are flowing in them respectively in the same direction. Where the resultant magnetic field due to two will be zero?
View full solution →An alpha particle enters a magnetic field of 0.2 weber $/ m ^2$ with a speed of $6.0 \times 10^5 m / s$ perpendicular to the field. Find out the acceleration of the particle and radius of the path.
View full solution →Write Biot-Savart law. Write the path of the motion of an electron when it enters magnetic field (a) perpendicularly (b) at $\theta$ angle.
View full solution →How can a galvanometer be converted into a voltmeter?
The ratio between flux binding and current I passing through a coil of N turns is called $\left(\frac{ N \phi}{2}\right)$
View full solution →Write expression in vector form for produced magnetic field due to small part of a current carrying conductor in Biot-Savart law.
Show that no work is done by magnetic Lorentz force on a moving charged particle in magnetic field.
A ring is uniformly charged. The total charge on ring is q and its radius is r. If it rotates on its axis by n rounds per second then what is the magnitude of produced magnetic field at the center?
Derive an expression for the magnetic field at any point on the axis of a current carrying loop from Bio-Savart's law. Draw the necessry fig.
When a charged particles moves in a uniform magnetic field in a direction perpendicular to the field, then the path of the particle will be:
- ✓Perabolic
- BCircular
- CStraight line
- DHelical
Answer: A.
View full solution →Moving charge produces:
- AOnly electric field
- BOnly magnetic field
- ✓Both electric and magnetic field
- DElectromagnetic waves along with electric and magnetic field
Answer: C.
View full solution →The toroid of radius 10 cm has 100 turns. If a current of 0.1 ampere is flowing in it, then the value of the magnetic field on the axis of the toroid will be:
- ✓$2 \times 10^{-4} T$
- B$4 \times 10^{-4} T$
- C$6 \times 10^{-4} T$
- D$8 \times 10^{-4} T$
Answer: A.
View full solution →A constant current is flowing through a long straight conductor, then the graph showing change in produced magnetic field B with distance r is:
- A
- B
- C
- ✓
Answer: D.
View full solution →Due to a current carrying circular coil of radius $R$, intensity of magnetic field on its axis at a distance $x(x \gg R )$, B will depend on $x$ :
- A$B \propto \frac{1}{x^{\frac{3}{2}}}$
- B$B \propto \frac{1}{x^2}$
- ✓$B \propto \frac{1}{x^3}$
- D$B \propto \frac{1}{x^{\frac{1}{2}}}$
Answer: C.
View full solution →Obtain expression for force on unit length of two straight parallel current carrying conductors. Under what conditions is this force attractive or repulsive? Define the standard unit of electric current.
Examine the maximum value of magnetic field at a point on the axis of circular current carrying coil after obtaining an expression for it.###Calculate produced magnetic field on the axis of any current carrying circular coil by making diagram. Examine the graph between distance and change in magnetic field after drawing the graph.
State Biot-Savart statement. Obtain an expression for produced magnetic field due to a straight and limited length of current carrying conductor wire. Write its similarities and differences with coulomb's law of electrostatics.
What do you understand by sensitivity and efficiency of a galvanometer? On which factors does it depend?
What is a moving coil galvanometer? Write its working by drawing its diagram and its principle. Prove that current in it is proportional to the produced deflection.###What is a galvanometer? Explain construction, working and principle of a moving coil galvanometer.
Generate a Moving Charges and Magnetism paper free
Pick question groups from the list above, set marks and difficulty, and export a branded PDF with step-by-step answer keys. First 3 chapters free — no signup.