NEET UG · Physics

Moving charges and magnetism

7 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 7 questions

A charge of $1 C$ moves at $20 m/s$ perpendicular to a magnetic field of $2 T$ . What is the magnetic force on it (in N)?
A charge of $5 C$ moves at $100 m/s$ perpendicular to a magnetic field of $2 T$ . What is the magnetic force on it (in N)?
A charge of $2 C$ moves at $20 m/s$ perpendicular to a magnetic field of $2 T$ . What is the magnetic force on it (in N)?
A charge of $5 C$ moves at $100 m/s$ perpendicular to a magnetic field of $5 T$ . What is the magnetic force on it (in N)?
A proton moves with speed $2 \times 1 0^{6} m/s$ at $6 0^{\circ}$ to a uniform magnetic field of $0.1 T$ . It follows a helical path. What is the pitch of the helix? (Proton mass…
A wire is bent into a square and carries current $I$ . The same length of wire is bent into a circular loop carrying the same current. The ratio of the magnetic field at the centre of the square to tha…
A charge of $2 C$ moves at $100 m/s$ perpendicular to a magnetic field of $2 T$ . What is the magnetic force on it (in N)?

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