List of top Physics Questions on Magnetic Effects of Current and Magnetism asked in MHT CET

A particle carrying a charge equal to 1000 times the charge on an electron, is rotating one rotation per second in a circular path of radius '$r$' m. If the magnetic field produced at the centre of the path is $x$ times the permeability of vacuum, the radius '$r$' in m is $[e = 1.6 \times 10^{-19} \text{C}] \quad [x = 2 \times 10^{-16}]$
A long wire carrying a steady current is bent into a circle of single turn. The magnetic field at the centre of the coil is ' $\text{B}$ '. If it is bent into a circular loop of radius ' $\text{r}_1$ ' having ' $\text{n}$ ' turns, the magnetic field at the centre of the coil for same current is
A wire has three different sections as shown in figure. The magnitude of the magnetic field produced at the centre '\(O\)' of the semicircle by three sections together is ( \(\mu_0 =\) permiability of free space)
The wire loop $PQRSP$ formed by joining two semicircular wire of radii $R_1$ and $R_2$ carries a current $I$ as shown. The magnitude of the magnetic field at the centre ' O ' is
A circular coil of wire consisting of ' $n$ ' turns each of radius $8\text{ cm}$ carries a current of $0.4\text{ A}$ . The magnitude of the magnetic field at the centre of coil is $3.14 \times 10^{-4}\text{ T}$. The value of ' $n$ ' is [Take $\mu_0 = 12.56 \times 10^{-7}\text{ SI unit}$]}
A particle carrying a charge equal to 1000 times the charge on an electron, is rotating one rotation per second in a circular path of radius '$r$' m. If the magnetic field produced at the centre of the path is $x$ times the permeability of vacuum, the radius '$r$' in m is $[e = 1.6 \times 10^{-19} \text{C}] \quad [x = 2 \times 10^{-16}]$
A charged particle is subjected to acceleration in a cyclotron which consists of two dees '\(D_1\)' and '\(D_2\)'. The charged particle undergoes increase in its speed.
A charged particle is subjected to acceleration in a cyclotron which consists of two dees '\(D_1\)' and '\(D_2\)'. The charged particle undergoes increase in its speed.