3. Draw the magnetic field lines produced by the bar magnets shown below: [2] S N |N S 4. Calculate the magnetic field w
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3. Draw the magnetic field lines produced by the bar magnets shown below: [2] S N |N S 4. Calculate the magnetic field w
3. Draw the magnetic field lines produced by the bar magnets shown below: [2] S N |N S 4. Calculate the magnetic field which produces an upward force of 7.1×10-¹6 N on a proton with a speed of 7.8×10³ m/s east. [3] 5. Calculate the magnetic force acting on a 35.0 cm long wire which carries an electron flow of 1.75 A west through a magnetic field of 0.670 mT up. [3]
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