Cambridge A-Level · Physics

Moving charges and magnetism

8 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 8 questions

A charge of $2 C$ moves at $20 m/s$ perpendicular to a magnetic field of $3 T$ . What is the magnetic force on it (in N)?
A charge of $2 C$ moves at $10 m/s$ perpendicular to a magnetic field of $2 T$ . What is the magnetic force on it (in N)?
A charge of $2 C$ moves at $100 m/s$ perpendicular to a magnetic field of $2 T$ . What is the magnetic force on it (in N)?
A charge of $5 C$ moves at $10 m/s$ perpendicular to a magnetic field of $3 T$ . What is the magnetic force on it (in N)?
A charge of $1 C$ moves at $20 m/s$ perpendicular to a magnetic field of $5 T$ . 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 $5 C$ moves at $100 m/s$ perpendicular to a magnetic field of $5 T$ . What is the magnetic force on it (in N)?
A charge of $1 C$ moves at $10 m/s$ perpendicular to a magnetic field of $2 T$ . What is the magnetic force on it (in N)?

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