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2. The 15-turn solenoid in the picture below has a radius of 0.018 m and a current of 5.0 A. A tiny particle with a charge of 7.9 x 10"C enters the centre of it solenoid sideways so that it moves at a speed of 3.5 x 104 m/s [right]. a) What is the magnetic field strength (magnitude and direction) inside the O- solenoid? [3 marks] a) What is the force (magnitude and direction) on the particle when it enters the solenoid? [3 marks]