Moving charges and magnetism is an important topic in the Physics section in MHT CET exam. Practising this topic will increase your score overall and make your conceptual grip on MHT CET exam stronger.
This article gives you a full set of MHT CET PYQs for Moving charges and magnetism with explanations for effective preparation. Practice of MHT CET Physics PYQs including Moving charges and magnetism questions regularly will improve accuracy, speed, and confidence in the MHT CET 2026 exam.
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MHT CET PYQs for Moving charges and magnetism with Solutions
1.
A long straight current-carrying wire is placed in a uniform magnetic field of strength \( B = 0.5 \, \text{T} \). If the current in the wire is \( I = 2 \, \text{A} \) and the wire makes an angle of \( 30^\circ \) with the magnetic field, find the force per unit length on the wire.\( 0.5 \, \text{N/m} \)
- \( 2.0 \, \text{N/m} \)
\( 1 \, \text{N/m} \)
- \( 3.0 \, \text{N/m} \)
2.
Two harmonic waves and are moving in the same direction, if both the waves are superimposed then the initial phase angle of the resultant wave is:- (A)
- (B)
- (C)
- (D) None of these
3.
In a hydrogen atom, an electron of charge e revolves in a orbit of radius $r$ with speed $v$. Then, magnetic moment associated with electron is- $\frac{evr}{2}$
- $2\,evr$
- $evr$
- $\frac{evr}{3}$
4.
Two long parallel wires separated by distance ‘d’ carry currents I1 and I2 in the same direction. They exert a force F on each other. Now the current in one of the wire is increased to three times and its direction is made opposite. The distance between the wires is doubled. The magnitude of force between them is
\(\frac {F}{2}\)
\(\frac {3F}{2}\)
\(\frac {2F}{3}\)
- 3F
5.
Maximum kinetic energy gained by the charged particle in the cyclotron is independent of- radius of the dees
- charge
- mass
- frequency of revolution
6.
In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is used to- increase space for rotation of coil
- reduce weight of galvanometer
- produce magnetic field which is parallel to plane of coil at any position
- make magnetic induction weak at the centre
7.
A photon of energy ‘E’ ejects photoelectrons from a metal surface whose work function is W0. If this electron enters into uniform magnetic field of induction ‘B’ in a direction perpendicular to field and describes a circular path of radius‘r’, then radius is given by
\(\frac {\sqrt {2m(E-W_0)}}{eB}\)
\(\frac {2e(E-W_0)}{mB}\)
\(\sqrt {\frac {2m(E-W_0)}{eB}}\)
\(\sqrt {2m(E-W_0)eB}{}\)
8.
The magnetic moment of electron due to orbital motion is proportional to (n = principal quantum number)- $\frac{1}{n^2}$
- $\frac{1}{n}$
- $n^2$
- $n$
9.
A circular coil carrying current 'I' has radius 'R' and magnetic field at the centre is 'B' . At what distance from the centre along the axis of the same coil, the magnetic field will be $\frac{B}{8}$ ?- $R \sqrt{2}$
- $R \sqrt{3}$
- $2\,R$
- $3\,R$
10.
A galvanometer has resistance of $100\, \Omega$ and a current of $10 \,mA$ produces full scale deflection in it. The resistance to be connected in series, to get a voltmeter of range $50$ volt is- $3900\, \Omega$
- $4000\, \Omega$
- $4600\, \Omega$
- $4900\, \Omega$
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